it's always appalling to see BEV's range degradation under cold weather. however, it should be better under WLTC test cycle, what would come if tested in more moderate CLTC or harsh EPA cycle?
🚗⚡️❄️ BEV range in cold conditions 📌 Cold temperatures can significantly affect the range of battery electric vehicles. A series of tests were conducted to compare the range performance at standard temperature (22°C) with that at -7°C and -20°C. The evaluation involved repeating two WLTC consecutively, with the cabin heating set to Auto at 22°C for the cold weather assessments. 📈 The Mercedes EQS experiences a 58% reduction in range at -7°C and a substantial 69% decrease at -20°C. In contrast, the Ioniq 5 shows reductions of only 46% and 58%, respectively. While the Mercedes shows a clear advantage at 22°C, the difference in range becomes less pronounced in extremely cold conditions. 📊 Analyzing the factors contributing to this range loss yields valuable insights. A primary factor is the cabin heating required for passenger comfort, especially for the EQS, which lacks a heat pump. Additionally, the cold temperature impacts the efficiency of powertrain and driveline consumption. Battery cell internal resistance rises, reducing usable energy. Depending on the control strategy, battery heating may be used to warm up the pack, consuming extra energy and reducing overall range. 👉 For more information, please contact Thomas DEROUIN #BEV #EVs #automotiveengineering #Thermalmanagement #Electricvehicles #A2MAC1