OSD, Fuse, and Rupture Discs: How do the “Safety Trio” on the Battery Cover Perform their Respective Functions?
In the safety system of new energy lithium batteries, thermal runaway prevention is crucial. While cell materials and battery pack protection are well-known, the “safety trio”—OSD, Fuse, and rupture discs—on the square aluminum battery cover creates an immediate, vital barrier for the cell. Each device has a distinct role, and together they intercept risks like







