Why Does the Range of Pure Electric Vehicles Decrease in Winter?
1 Answers
Reasons for the decreased range of pure electric vehicles in winter: Firstly, it is related to the internal electrodes and electrolyte of the battery. For the power battery of an electric vehicle, when the temperature is relatively low, the lower the temperature of the active material in the positive electrode, the worse its activity. The electrochemical characteristics inside the battery will cause the battery's activity to decrease rapidly, leading to an increase in internal resistance. The chemical reaction speed of lithium batteries also slows down to some extent. Therefore, for battery discharge, this results in a smaller current, increased system discharge resistance, reduced available power, and inevitably a shorter driving range. Consequently, the battery's capacity also decreases, leading to a decline in range.