As one of the core components of the energy storage system, it is crucial to explore the performance of lithium iron phosphate batteries under different operating conditions. This paper aims to explore the correlation between voltage, capacity and temperature of LiFePO4 batteries by conducting discharge tests at different multiples of the battery in different temperature ranges. To evaluate the specific effects of different temperatures and discharge rates on battery performance. The experimental results indicate that at a conventional discharge rate of 1C, the battery experiences a significant voltage drop within the temperature range of -15°C to 0°C. This voltage drop gradually improves as the temperature rises. Additionally, at low temperatures, the energy efficiency of the battery is typically lower than its capacity efficiency. On the other hand, at high discharge rates, the overall discharge capacity changes only slightly across different temperatures, with variations staying within 5%. Similarly, within the temperature range of 35°C to 55°C, the overall discharge capacity remains relatively consistent, also staying within a 5% difference. It is worth noting that within the 35°C to 55°C temperature range, the overall capacity of a LiFePO4 battery is lower than that of a LiFePO4 battery. In the temperature range of 35°C~55°C, discharge curves at different multiples exhibit similar trends. Specifically, at high multiples within the same temperature range, the overall discharge capacity varies by less than 5%. These findings offer valuable insights for determining the most suitable operating conditions for lithium iron phosphate batteries in real-world scenarios, with significant implications for engineering applications.
Characterization of Multiplicative Discharge of Lithium Iron Phosphate Batteries at Different Temperatures
10.10.2024
708192 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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