LFP Battery Module Swelling Force: Lifecycle Data, Peak Inversion, and Structural Design Limits for 280 Ah Prismatic Cells
TL;DR In a constrained-condition lifecycle test of 280 Ah LFP modules, swelling force at the 30% SOC charge peak overtakes the 100% SOC peak as the dominant structural load once SOH drops below ~94%, and a 1P12S module reaches 2365…