Investigation of Catastrophic Battery Failures

field failure investigation of escooter battery

This Investigation of Catastrophic Battery Failures looks at field failures of lithium ion batteries in devices such as e-scooters and e-bikes. This is a summary of: Holloway, J.; Maharun, M.; Houmadi, I.; Remy, G.; Piper, L.; Williams, M.A.; Loveridge, M.J. Developing Preventative Strategies to Mitigate Thermal Runaway in NMC532-Graphite Cylindrical Cells Using Forensic Simulations. Batteries 2024, 10, 104. … Read more

Tesla Self-Activated Draining System

Tesla self activating drain plug

The Tesla Self-Activated Draining System was patented some time ago, but this simple mechanical device is still being used in the latest Cybertruck. A method of managing leakage of liquid inside a battery system comprises: containing leaking liquid in a non-liquid sensitive region of the battery system so as to protect internal electrical components of … Read more

Enhancing Li-Ion Battery Safety

OsecoElfab DualGard breather and vent disc

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

Knee Point

Battery Capacity versus number of cycles showing the Knee Point

Attia et al [1] also describe six mechanisms/pathways that can produce the “Knee Point”: The impact of this nonlinear degradation in cell capacity depends to some extent on the architecture and application, but includes: This post has been built based on the support and sponsorship from: Eatron Technologies, About:Energy, AVANT Future Mobility, Quarto Technical Services, TAE Power Solutions and The Limiting Factor.  … Read more

Rupture Disc Integration for Overpressure Mitigation

OsecoElfab image of a burst disc

Enhancing Li-Ion Battery Safety: The Imperative of Rupture Disc Integration for Overpressure Mitigation Author: OsecoElfab Introduction The rapid growth of Li-Ion batteries in various industries, including electric vehicles, portable electronics, and renewable energy storage, brings to the forefront a critical safety concern: thermal runaway and its potential to trigger overpressure explosions. To address this imminent … Read more

Fire Mitigation Strategies

options for thermal barriers

Author: Nrusimhan Seshadri, Balance Batteries Having looked at the challenges and regulatory standards relating to fire hazards posed by Li-ion batteries in the previous article, in this article we will have a look at some of the fire mitigation strategies deployed across 10 BEVs in the current market. The choice of thermal barrier materials (TBMs) for a … Read more

What Happens if a Cell goes into Thermal Runaway?

battery cell in thermal runaway

Author: Nrusimhan Seshadri, Balance Batteries Thermal hazards of (Li-ion batteries) LiB’s are well known. The spontaneous exothermic release of energy from LiBs when subjected thermal, mechanical and/or electrical abuse is referred as thermal runaway. Though the chances of thermal runaway in modern EV’s are extremely low, the danger posed  by EV battery fires can’t be … Read more

What is Calorimetry?

adiabatic calorimeter designed for battery testing

Author: Mario Toubes-Rodrigo, Application Specialist, H.E.L Group Calorimetry is a branch of thermodynamics that deals with heat transfer quantification. Heat can be transferred during a variety of processes, such as chemical reactions, phase changes, or dissolution of solutes in a solvent. Calorimetry follows the first law of thermodynamics, which states that energy cannot be created … Read more