Weibull Analysis - An Evaluation Tool for Repair of Battery Systems

摘要

As new battery technologies evolve to meet the needs of PHEVs (Plug-in Hybrid Electric Vehicles) and EVs Electric Vehicles), the pressure to reduce costs has led to concepts that take advantage of the remaining life in automotive traction batteries for subsequent use in less demanding applications. The most common of these ideas is to use automotive high power batteries in lower power applications when the minimum power deliverable cannot meet the automotive requirement. Another idea is to rebuild these packs with new cells or modules of cells to regain the power or energy specification. The replacement of a few cells may seem a straightforward operation and the use of an automotive sub-specification pack in stationary service may be financially attractive, however, the expected new service life in these scenarios needs to be verified.