Energy characteristics of different electricity storage technologies

U ovom radu opisani su različiti sustavi za pohranu električne energije: mehanički, električni, elektrokemijski i termički. Opisane su njihove prednosti i nedostatci te područja primjene, kao i stvarni primjeri gdje se oni primjenjuju. U praktičnom dijelu izvršena je analiza različitih elektrokemijskih spremnika energije na temelju punjenja i pražnjenja istih. Tehnologije koje su testirane jesu litij-ionska i nikal-metal-hibridna, a uređaj koji je koristio za punjenje pražnjenje je Junsi iCharger 4010Duo. Usporedbom rezultata učinkovitosti kružnog procesa različitih modela litij-ionskih baterija donesen je zaključak o najisplativijoj izvedbi. Rezultati i analize svih ciklusa punjenja/pražnjenja izvedeni su u programskom paketu EXCEL.This paper describes different systems for storing electricity: mechanical, electrical, electrochemical and thermal. Their advantages and disadvantages of the field of application are described, as well as real examples of where they are applied. In the practical part, the analysis of different electrochemical energy tanks was performed based on their charging and discharging. The technologies tested are lithium-ion and nickel-metal-hybrid, the device used for charging discharges is the Junsi iCharger 4010Duo. By comparing the results of the cycle efficiency of different models of lithium-ion batteries, a conclusion was made about the most cost-effective performance. The results and analyzes of all charge / discharge cycles were performed in the EXCEL software package