The main functions of the Cooling Fan for electric vehicle batteries are as follows:
Maintain an appropriate temperature: Batteries generate heat during charging and discharging. If the heat is not dissipated in time, the battery temperature will keep rising. The cooling fan forces air flow to carry away the heat on the battery surface, keeping the battery temperature within an appropriate working range (usually 25℃ - 40℃). This helps improve the charging and discharging efficiency of the battery, reduce battery aging and wear, and extend the battery's service life.
Ensure temperature uniformity: Electric vehicle batteries are typically composed of multiple battery cells. During the charging and discharging process, temperature differences may occur among battery cells at different positions. Through reasonable airflow design, the cooling fan can make the air flow evenly through each battery cell, reduce the temperature difference inside the battery pack, avoid local overheating, and ensure the consistency and stability of the overall performance of the battery pack.
Enhancing safety: When the battery temperature is too high, it increases the risk of thermal runaway, which may cause safety accidents such as smoke, fire and even explosion. The cooling fan can effectively control the battery temperature, reduce the possibility of thermal runaway, and enhance the safety of electric vehicles.
Optimize energy efficiency: At an appropriate temperature, the internal resistance of the battery is relatively small, and the energy loss during charging and discharging is also relatively small. The cooling fan helps maintain the appropriate temperature of the battery, which is conducive to improving the energy conversion efficiency of the battery, enabling electric vehicles to utilize electrical energy more effectively and increase their driving range.
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