from chemistry to pack
The Venting and Physics of Thermal Runaway pages describe cell venting qualitatively: gas builds up inside the cell, a burst disc or crimped vent opens once a threshold pressure is reached, and hot gas and electrolyte aerosol are ejected. This post works through the same event quantitatively, how fast the gas actually leaves the cell … Read more
CATL’s automotive-grade NMC811 prismatic cell ships with a headline safety feature: a “Dual Vent Safety Design.” The specifications: We believe this cell is for ACC. Jerry Wan shared details of this CATL cell on LinkedIn and it got us thinking: Why vent design matters more on NMC811 A cell’s vent only has one job: get … Read more
AION Engineering INC Safety is at the core of every lithium-ion cell design. To ensure reliable operation in demanding applications, the cell assembly and structure integrate multiple layers of protection. These features collectively reduce the risk of failure, overheating, or explosion. PTC (Positive Temperature Coefficient Device) The PTC acts as a resettable fuse: Applications: CID … Read more
Integrating Pressure Relief and Breather Devices for Overpressure Mitigation for battery safety. Author: OsecoElfab The rapid growth of Li-Ion batteries in various industries, including electric vehicles, portable electronics, and renewable energy storage has thrown a spotlight onto a critical battery safety concern: thermal runaway and its potential to trigger overpressure explosions. Managing Thermal Runaway To … Read more