Critical frequencies for lead acid batteries?

[APPENG]

Ive been trying to find information on this subject but havent had much luck on the web.

Is there a critical vibration frequency that needs to be avoided in lead acid batteries for automotive and heavy truck applicaitons? Or is this really manufacturer dependant?

Thanks in advance

Regards,
Jon

 

[potteryshard]

I would expect that information to only be available from the manufacturers, but I would also suspect that it is fairly consistent between manufacturers. I've heard of no instances where one brand vibrates apart in certain models while other brands work.

 

[electricpete]

In general the critical (resonant) vibration frequencies for components can be determined using a "bump test": Safely provide impulsive mechanical agitation and use a vibration data collector to measure the frequency of the response at various locations of interest (or selecting one measurement location and vary the impacting location... gives same results). One trick is capturing the right points of interest - I guess you'd check the bottom, sides, top, and terminals... but if it is an internal resonance that doesn't show up outside than this method would not work.

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(2B)+(2B)' ?

 

[ScottyUK]

Lead isn't famed for it's resonant properties. Ever hit a bell made of lead? On top of that the plates are damped by liquid electrolyte. I doubt you will be able to excite any resonance of signifance.

On the other hand, lead has poor mechanical properties from a strength perspective: dense, soft, and of low tensile strength. Impact or impulse type loadings would potentially be a problem.


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