engleski

Supercapacitors, cell balancing using resistors

Supercapacitors, also known as ultra-capacitors and electrochemical capacitors a special kind of capacitor with the capacity of the order of the farad (tens, hundreds and thousands of farads). The paper describes their basic features and presents their equivalent schemes with the physical meaning of the circuit elements in them. This paper gives an overview of the problem of unequal voltage distribution in circuit with serial connected supercapacitors. Passive voltage balancing techniques are shown. Analytical expressions that describe the behaviour of supercapacitor serial connection with and without the passive resistor balancing circuit is derived. On a practical example are compared the results obtained by derived analytical expressions and simulation.

electrochemical double layer capacitors, ultracapacitors, voltage balancing

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