Core Viewpoint - The article discusses the challenges and advancements in the reliability assessment of energy storage systems, emphasizing the need for a comprehensive evaluation framework that incorporates lessons from other industries and various assessment methodologies [2][4][10]. Group 1: Reliability Assessment Challenges - Current energy storage systems face challenges such as incomplete reliability assessment methods and difficulties in overall evaluation [2] - The roundtable discussion aimed to explore the reliability assessment of energy storage systems by leveraging experiences from data center UPS power supplies and automotive battery management systems (BMS) [4] Group 2: Evaluation Framework - A three-stage evaluation system for lithium battery reliability was proposed, focusing on research and development, production, and application phases [5] - The evaluation metrics include market failure rates, which rely on big data platforms for real-time tracking of customer complaints and product performance [5][6] Group 3: Comparison of UPS and PCS - A comparison between data center UPS and energy storage PCS highlighted differences in application scenarios and power supply architectures [7] - UPS systems require a reliability level of 99.999%, while PCS systems do not have such extreme requirements, indicating a growing trend towards lithium battery applications in data centers [7] Group 4: BMS Safety and Reliability - The development trends in BMS safety standards were discussed, with a focus on the GB/T39086 standard and the automotive industry's requirement for C-level safety [8] - Continuous optimization of safety measures through improved sensor accuracy and control strategies is expected to enhance BMS reliability [8] Group 5: Safety Analysis of Energy Storage Systems - The safety challenges of energy storage systems are increasing due to higher energy density and longer lifespans [9] - A method combining fault tree analysis (FTA) and Bayesian networks was proposed to evaluate failure probabilities and establish safety levels for energy storage products [9] Group 6: Overall Reliability Evaluation System - A reliability evaluation system for energy storage systems was proposed, focusing on accident occurrence models and integrating subsystem evaluations [10] - The system categorizes energy storage operations into four protective layers, allowing for a comprehensive assessment of overall reliability [10]