Battery cell impedance measurement method and apparatus

Battery cell impedance measurement method and apparatus

  • CN 102,768,305 A
  • Filed: 04/28/2012
  • Published: 11/07/2012
  • Est. Priority Date: 05/04/2011
  • Status: Active Application
First Claim
Patent Images

1. circuit arrangement that is used for confirming the impedance of battery unit, this circuit comprises:

  • First circuit is configured to produce the sampled value of representing sinusoidal waveform and cosine waveform, has N sampled value representing each sinusoidal waveform cycle and N sampled value representing each cosine waveform cycle;

    Second circuit is coupled to the output of first circuit and is configured to and in response to the sampled value of cosine waveform electric current is input to said unit, and the amplitude of said electric current and the sampled value of cosine waveform are proportional;

    Tertiary circuit, the voltage level that is coupled to said unit and is configured to electric current is input to the unit that this unit produces is sampled;

    AndThe 4th circuit is coupled to the output of tertiary circuit and is configured to each voltage level by tertiary circuit sampling is separated into real part and imaginary part component.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×