Battery Engineering

A data-driven framework is introduced for predicting the energy yield and classifying the trigger mechanism of thermal runaway in lithium-ion batteries. The core of this approach is a 2D uniform data augmentation method that corrects for severe data imbalances across multiple feature dimensions simultaneously. A stacked ensemble regressor trained on this balanced data demonstrates high predictive accuracy across all failure modes, providing a valuable tool for designing safer battery systems.

This talk presents mathematical modeling approaches to understand and simulate thermal runaway in lithium-ion batteries, focusing on capturing the complex heat and mass transfer processes that drive this critical phenomenon.

The fast pace of consumer electronics development often challenges the validation for lithium ion batteries, which are long lead-time and critical components. To navigate this constraint, reliability validation needs to be agile. This talk details Google’s "shift-left" strategies to expedite the battery validation. We will share practical approaches covering three key phases: (1) early mechanical risk validation; (2) module - system validation correlation; and (3) longevity assessment for intended field life

Solid-state batteries provide an excellent opportunity for innovation, thanks to their ability to combine higher energy density, greater power, and increased safety, but require new materials and processes. This talk will review Saft’s position in the technological development of all-solid-state batteries (ASSB) and our progress in working with sulfide electrolytes. Topics of discussion include screening for sulfide and silicon materials, creation of protective layers, and growth areas for prototype development.

This talk examines safety considerations in solid-state batteries using a bottom-up approach. By analyzing material behavior and interface interactions, we identify potential failure mechanisms and highlight emerging insights that challenge assumptions about the inherent safety of solid-state systems

This talk explores key challenges in battery module design, focusing on thermal malmanagement with high-power cells in confined spaces—particularly in the material handling sector. Drawing from real-world experience, it covers failure scenarios, design strategies, and novel thermal solutions using both emerging and commercial materials. Attendees will gain actionable insights into how engineering decisions impact thermal behavior across the battery development lifecycle

The impedance spectrum of a lithium-ion battery cell contains a rich amount of information regarding the cell’s physical properties. It can be measured in a straightforward way using electrochemical-impedance spectroscopy (EIS) and the measurements can be regressed against a physics-based model to infer model parameter values. To do so, we must be able to simulate the model quickly and accurately: this talk addresses three approaches to doing so.

Battery electric vehicles (BEVs) and hybrid electric vehicles (HEVs) require careful and reliable battery management for safe and efficient operation and energy utilization.  A “dual-mode” variant of model predictive control (MPC) has recently shown it can deliver robust performance at low computational cost.  This presentation explains this new control approach and shows how it may be employed to improve overall battery utilization in electric vehicles.

KULR Technology Corporation, in collaboration with South 8 Technologies and NASA Johnson Space Center, is developing -60 °C lithium-ion batteries for deep-space and lunar missions under the Texas Space Commission’s SEARF program. Using South 8’s novel LiGas electrolyte in 18650-M35A and 21700-M52V cells, the project integrates KULR’s radiation-tolerant kBMS into the KULR ONE Space (K1S) platform, culminating in an 8U CubeSat flight demonstration validating cryogenic, human-rated battery performance.

Discharging stranded energy in electric vehicle (EV) batteries after a crash presents significant logistical challenges. Post-collision, damaged batteries may retain high voltage and capacity, posing risks of thermal runaway, fires, or electric shocks. Identifying safe and effective methods to discharge this energy is critical for first responders. This presentation explores the complexities of safely managing stranded energy, examining current approaches, technologies, and potential improvements to enhance post-crash safety protocols.

Vents are crucial for battery pack safety, especially under thermal runaway conditions. As battery cell chemistry and pack designs evolve, selecting appropriate venting units becomes increasingly important. The presentation provides an overview of regulatory and technological trends influencing vent design and introduces additional features such as gas sensors and hot particle filters.

As battery controls become more dynamic, cell testing must move beyond static protocols to adaptive, model-integrated validation. Cell hardware-in-the-loop (HIL) couples real cells with real-time battery and environmental models, widening scenario coverage while reducing physical tests and equipment. We see cell HIL as a cornerstone for digital-twin testing, real-time control co-development, and accelerated learning loops. This talk reviews how our collaboration with Maccor enables advanced control validation at scale.