Battery Preheating Function - Bug Report

Issue Summary: The battery preheating feature in the mobile application is not functioning correctly, resulting in poor charging performance in cold weather conditions. Detailed Description: Problem 1: Incorrect Temperature Assessment After overnight exposure to freezing temperatures (interior temperature: -4°C), the app incorrectly reports that "battery temperature is normal and preheating is not required" when attempting to activate preheating. This assessment is clearly inaccurate given the sub-zero conditions. Problem 2: Reduced Charging Performance When connecting to a charger without proper battery preheating, the vehicle cannot achieve high-power charging rates, confirming that the battery is indeed cold and requires preheating. Problem 3: Charging Centre Preheating Issues The "Battery preheating" option in the Charging Centre allows scheduling of preheating activation After setting the activation time, there is no visual indicator in the app to confirm whether preheating has actually started The preheating option deactivates automatically after just a few minutes, suggesting the system believes optimal battery temperature has been reached This is impossible to achieve in such a short timeframe, and battery charge level remains unchanged, indicating no actual preheating occurred Expected Behavior: Accurate temperature detection and appropriate preheating activation in cold conditions Clear visual indicators showing active preheating status including time needed to achieve optimal temperature Sufficient preheating duration to achieve optimal battery temperature for high-power charging Impact: Reduced charging efficiency and potentially shortened battery lifespan due to inadequate thermal management in cold weather conditions.