I have to design a stable stack of 10 (or more) in series connected 2.7V ultracapacitors. To be able to do this I need a balancing/protection board to not overcharge the ultracapacitors (due to difference in impedance/difference in leakage current/tolerance in rated 2.7V).
Looking into this I noticed that there are a lot of different ways to balance a circuit. Two examples:
- For example I found Amazon and Ebay sold premade balancing circuits (https://www.amazon.com/MaxWell-ultracapacitor-supercapacitor-balancing-protection/dp/B01ALZK72O).
- I also read a lot about a type of MOSFETs being used as a way of balancing (http://www.aldinc.com/ald_precision-supercap-auto-balancing-sab-mosfets.php).
- http://www.linear.com/parametric/su...1106,1367,1033,1032!s_1107,0!gtd_!1112_Active Cell Balancing|Active Charge Balancing|Automatic Cell Balancing
So the question is: how to choose the right way of balancing? Or what information do I need to make right choice?
I have to possibility to design and print my own PCB using an example circuit of a suitable balancing circuit.
What is further important in making the choice are the efficiency of the circuit (I want as low dissipation/lost energy as possible) and the charge/discharge times (I do not want these to be affected much).
Thanks for any help!
Looking into this I noticed that there are a lot of different ways to balance a circuit. Two examples:
- For example I found Amazon and Ebay sold premade balancing circuits (https://www.amazon.com/MaxWell-ultracapacitor-supercapacitor-balancing-protection/dp/B01ALZK72O).
- I also read a lot about a type of MOSFETs being used as a way of balancing (http://www.aldinc.com/ald_precision-supercap-auto-balancing-sab-mosfets.php).
- http://www.linear.com/parametric/su...1106,1367,1033,1032!s_1107,0!gtd_!1112_Active Cell Balancing|Active Charge Balancing|Automatic Cell Balancing
So the question is: how to choose the right way of balancing? Or what information do I need to make right choice?
I have to possibility to design and print my own PCB using an example circuit of a suitable balancing circuit.
What is further important in making the choice are the efficiency of the circuit (I want as low dissipation/lost energy as possible) and the charge/discharge times (I do not want these to be affected much).
Thanks for any help!
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