Patent ID: 9322884
Filing Date: 2016-04-26
CPC Classification: G01R

Claim Text:
1. An impedance analyzing device, adapted to a testee comprising an electrode or at least one battery cell, the impedance analyzing device comprising: a power source supply unit, for providing a variable-frequency voltage signal to the testee, the variable-frequency voltage signal having a plurality of frequencies in a range between a first frequency and a second frequency; a signal capturing unit, for capturing a current signal generated by the testee in response to the variable-frequency voltage signal; a signal adjusting unit, coupled to the power source supply unit and the signal capturing unit, for receiving and adjusting the variable-frequency voltage signal and the current signal to generate an adjusted variable-frequency voltage signal and an adjusted current signal; a signal analyzing unit, coupled to the signal capturing unit, for receiving and analyzing the adjusted variable-frequency voltage signal and the adjusted current signal in frequency domain to obtain at least one of a frequency domain parameter and a time domain parameter; and a processing unit, coupled to the signal analyzing unit, for receiving the at least one of the frequency domain parameter and the time domain parameter, and for obtaining an impedance variation characteristic of the testee according to the at least one of the frequency domain parameter and the time domain parameter.