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Neware Battery Test Equipment For Testing Coin Cell
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dQ/dV Curve:Neware BTSDA have a function of dQ/dV curve. dV/dQ curve is an analytical tool that can analyze the loss of active lithium in lithium ion batteries. The peaks in the dV/dQ curve mainly reflect the phase transition of the active substances in the process of lithium immobilization and lithium removal.The physical meaning of dQ/dV curve is the volume of a material per unit voltage. We all know that lithium ion batteries have a voltage platform for both anode and cathode materials. A high negative capacity on the voltage platform means that there is a lot of |
capacity in a very small voltage fluctuation range,so it is a characteristic peak on the dQ/dV curve.Usually we think of each peak on the dQ/dV curve as representing an electrochemical reaction. Because the reaction potentials of different materials are different, the positions and heights of peaks in the dQ/dV curve will also be different.dV/dQ curve mainly reflects the phase change of positive and negative active substances in the charging and discharging process. According to the data, we can find out the phase transition corresponding to different characteristic peaks in the dV/dQ curve, and then according to the variation trend of the dV/dQ curve in the cycle or in the storage process, we can qualitatively infer the cause of the reversible capacity loss of lithium ion battery, providing a reference for the design of lithium ion battery. | |
Battery Performance Test:There are four main factors affecting the battery performance-cyclic life,recharge rate, temperature,depth of discharge.By evaluating a battery’s charge discharge performance,we may effective simulate the actual working conditions of the battery. The charge process of a battery typical consists of four stages, including the preliminary charge,constant current charge, tipping charge and trickle charge.During the discharge process,high rate discharge does not tend to continue for long,Therefore,simulation of variable pulse discharge current has emerged as a new tendency for developing novel battery charge discharge testing system.What’s more,the simulation mush be so flexible that it can satisfy various usage requirements from user. | ![]() |