Lithium Ion Battery Internal Resistance

[jack_yls]

HI all,

Previously, I have store my lithium ion in chamber for 3 months. Then, i checked the internal resistance of the batteries. However the result is "no change", I think that's something wrong with the measurement system. However, I have to redo the test again. So, I wish to know more theory be hide the measurement or test.

I wish to know the relationship of internal resistance of battery versus time storage when ambient temperature. Please share me the info. Thank you.

 

[A.Anand Srinivasan]

actually what did u use to measure the internal resistance of the battery....

actually the internal resistance doesnt change much over a region of output voltage... so if you would have fully charged the battery and then kept in storage then there is a possibility that your testing equipment might not be sensitive enough to show the change...

 

[iamxo]

Accurate Electrical Battery Model Capable of Predicting Runtime and I–V Performance

may be this file will help. you can find on internet, but I also upload it.