Application of new signal processing methods for electrochemical power source relaxation modes detection

Electrochemical battery is the main power source for portable radio means one of the main redundant power source for stationary electronic means. The present paper is dedicated to the development of new method for estimation technical state of electrochemical power sources. There are a lot of effective diagnostic tools for electrochemical batteries however most of them require expensive experimental apparatus and interruption of their operation mode. In frame of this paper it is suggested to use relaxation processes caused by the load change as a diagnostic feature. In case of linear mode the time response comprises the same information as AC Impedance curve. It means that the time response comprises required diagnostic information. The load change can be caused by the small transistor controlled additional load connected in the parallel to the main load. To analyze relaxation processes the novel effective method developed by the coauthor of this work R.R. Nigmatullin is used. The proposed methods allow to increase reliability and accuracy of the electrochemical power source parameter determination.