Patent ID: 9103891
Filing Date: 2015-08-11
Classification: G01R

Abstract:
1. An apparatus for monitoring a voltage of a battery cell, comprising: a first input terminal for coupling with a positive electrode of the battery cell, a second input terminal for coupling with a negative electrode of the battery cell, an address terminal for coupling with the negative electrode of the battery cell, a third input terminal for coupling with an external power supply, an output terminal for outputting an output signal, a power supply circuit generating an internal power supply voltage based on a voltage difference between the third input terminal and the second input terminal, a measurement circuit measuring a voltage difference between the first input terminal and the second input terminal and outputting a measured signal, a control circuit outputting the output signal based on the measured signal to the output terminal, a power supply wiring for providing the internal power supply voltage to the measurement circuit and the control circuit, a ground wiring for providing a ground voltage inputted from the second input terminal to the measurement circuit and the control circuit, a first switch circuit for coupling with the address terminal and the ground wiring.