Is the internal resistance of lithium battery the bigger the better or the smaller the better?

Inside the lithium battery, lithium ions move from one pole to the other, and the factors that hinder the movement of ions in the process together constitute the internal resistance of the lithium battery. The main part includes the physical internal resistance of the conductive member; the inherent impedance of the electrochemical material such as the motor material, the diaphragm and the electrolyte; and the hindrance to the movement of lithium ions temporarily caused by the presence of current inside the battery; these three parts together constitute the inner The main body of resistance.

The internal resistance is most sensitive to temperature, and the internal resistance can vary greatly at different temperatures. One of the important reasons for the deterioration of battery performance at low temperatures is the excessive internal resistance of the battery at low temperatures.

Lithium battery as a power source, from the outside, the internal resistance must be the smaller the better. Especially in the case of power applications, small internal resistance is a necessary condition.

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