Impedance measuring instrument and impedance measuring method

Impedance measuring instrument and impedance measuring method

  • CN 106,133,539 A
  • Filed: 03/26/2014
  • Published: 11/16/2016
  • Est. Priority Date: 03/26/2014
  • Status: Active Application
First Claim
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1. an impedance measuring instrument, has:

  • Power subsystem, its battery cells multiple to stacking and the positive pole of layer-built battery and the negative pole output that obtain are described for measuringThe alternating current of the impedance of layer-built battery;

    Detector unit, it detects the alternating current potential difference between INTRM intermediate point and the described positive pole of described layer-built battery and described negative poleAnd at least one party in the alternating current potential difference between described INTRM intermediate point;

    Arithmetic element, it is based on the alternating current potential difference detected by described detector unit and exchanging of exporting from described power subsystemElectric current carrys out the impedance of layer-built battery described in computing;

    Element, it has the impedance of the setting required for calculating the evaluated error of described impedance;

    AndSwitch unit, it alternately switches battery connection status and element connection status, and described battery connection status is described electricityThe state that source unit and described detector unit are connected with described layer-built battery, described element connection status be described power subsystem andThe state that described detector unit is cut off the connection with described layer-built battery and is connected with described element,Wherein, in the case of described switch unit is switched to described element connection status, described arithmetic element is obtained describedThe impedance of element, diagnoses the mensuration state of described layer-built battery or impedance to described layer-built battery is corrected.

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