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Can Batteries Exhibit Resonance at Particular Frequencies?

Discussion in 'Power Electronics' started by epsolutions, Sep 22, 2020.

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  1. epsolutions

    epsolutions

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    Sep 7, 2019
    For example, if I connect an alkaline D cell across a signal source, could one or more resonant "peaks" be detected upon an oscilloscope?

    If so, what would be the best test set up to demonstrate this effect on a fully charged cell?

    If such resonance does exist, what is its cause and how might it vary in frequency and intensity between different types and sizes of cells or batteries?
     
  2. davenn

    davenn Moderator

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    Sep 5, 2009

    EVERYTHING has resonance from you and me to the Earth and everything on it
    The resonant frequency is primarily determined by size and density of the object


    I have a difficult time trying to understand why you want to know the resonance of a battery ??
     
  3. epsolutions

    epsolutions

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    Sep 7, 2019
    I believe you are referring to eigenfrequency as opposed to electrical resonance.

    The latter may have implications with regard to battery charging efficiency?
     
  4. Harald Kapp

    Harald Kapp Moderator Moderator

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    You charge batteries with DC, why would any resonance above DC be of interest?
     
    davenn likes this.
  5. epsolutions

    epsolutions

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    Sep 7, 2019
    If there was any experimentally determined advantage of a particular frequency, in terms of electro-chemical response or other phenomena, pulsed DC could be applied.
     
  6. Harald Kapp

    Harald Kapp Moderator Moderator

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    Nov 17, 2011
  7. Nanren888

    Nanren888

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    Nov 8, 2015
    So you are asking about benefits of pulsed DC charging?
    Is this related to a resonance in the battery?
    Sorry, can't really see where the resonance comes in.
    At what sort of Q-factor do we consider it a resonance worth thinking about?
     
  8. epsolutions

    epsolutions

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    Sep 7, 2019
    By "resonance" I meant that the particular cell or battery might have some detectable non-linear response to the frequency of the pulsed DC. This might then be used to optimize the charging process. I guess it's a bench project then.
     
  9. Nanren888

    Nanren888

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    Nov 8, 2015
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