Reliability Estimation and Impact Analysis of High-Voltage Distribution Box Under Series Model

During electrical design, research and development, product used to be overdesigned due to excessive safety margins often occurs due to unpredictable product reliability. In order to achieve product optimization design, electronic products need effective reliability estimation models and impact analysis methods. This study takes the high-voltage distribution box of new energy vehicles as the research object, and proposes it according to the national standard GB/T37963-2019 and the sensitivity principle Calculation model and analysis method of system failure rate and component influence under the assumption of series model. Evaluate the average life of the high-voltage distribution box, identify key components, provide a reference for engineers and technicians to estimate reliability, and lay the foundation for reliability design screening and reliability growth strategy decision-making.