The most suitable working (charging and discharging) temperature for power lithium batteries used in pure electric vehicles is 35 to 45 ° C. When used in severe winter areas (such as temperatures below -25 ° C), the discharge performance and charge acceptance of power lithium batteries are subject to low temperatures The impact is greatly reduced.
If you cannot start your car in the cold winter, it is most likely the battery. The cold climate greatly reduces the chemical reaction efficiency in the battery and increases the internal resistance of the battery. These two factors add up, causing the starting power of the battery to decrease with decreasing temperature. The curve on the right shows the relationship between battery capacity and temperature.
On the other hand, according to statistics from the International Battery Institute, the required starting power of cars in winter is 40% to 70% higher than in summer. Therefore, at 0 ° F (-18 ° C), a fully charged battery can only provide 40% of the starting power, even if this battery is a new battery in good condition. It is therefore important to pre-heat the battery in order to reach its full potential.
The above is the relevant content introduced by the editor of the electric heating sheet manufacturer, I hope everyone likes it.