On 16 January 2013, all Boeing 787 Dreamliners were indefinitely grounded due to lithium-ion battery failures that had occurred in two planes. Subsequent investigations into the released through National Transportation Safety Board (NTSB) factual report, March 15th press conference Japan, and NTSB hearings Washington D.C., never identified root causes of failures—a major concern for ensuring safety meeting reliability expectations. This paper discusses challenges qualification, assessment,...

Traditionally, capacity and resistance have been used as the features to determine state of health lithium-ion batteries. In present study, two additional features, length time constant current voltage phases charging were indicators health. To compare appropriateness each feature, batteries subjected different discharge profiles tested failure. For cycle, capacity, resistance, charge measured compared based on their usefulness estimate Lastly, all combined give a fusion result for estimation.

Current commercial battery management systems (BMSs) do not provide adequate information in real time to mitigate issues of cells such as thermal runway. This paper explores and evaluates the integration fiber optic Bragg grating (FBG) sensors inside lithium-ion (LiB) coin cells. Strain internal external temperatures were recorded using FBG sensors, evaluated at a cycling C/20 rate. The preliminary results present scanning electron microscope (SEM) images electrode degradation upon sensor...

A method for remaining useful performance (RUP) analysis lithium-ion batteries is presented using Dempster-Shafer theory (DST) and Bayesian Monte Carlo (BMC). First, an empirical model developed, which can provide a good fit to the battery fade data. Then, parameters of are initialized by combining sets training data based on DST. When become available through monitoring, updated BMC manage uncertainties in degradation process. Once converges observed process, it be propagated acceptable...

This paper presents an investigation into the reliability and physical degradation mechanisms associated with loss of battery performance. Cells from two different manufactures underwent cycle life testing until failure (defined as a 20% decrease in nominal capacity). Designated samples each type were subjected to one discharge methods, at constant rate 1C other 0.5C. A third group batteries collected examined after undergoing catastrophic field applications. The tape pull test (to...

Supercapacitors provide high-power energy storage for electrical systems. The expected useful life of a supercapacitor is related to the oxidation functional groups on graphite electrode surface during usage, and it highly dependent operational voltage temperature. In this paper, model developed commercial supercapacitors. incorporates new multiplier describe combined effects temperature life. Accelerated testing was conducted obtain time failure supercapacitors over range conditions,...

Lithium-ion batteries are shipped worldwide with many limitations implemented to ensure safety and prevent loss of cargo. Many the transportation guidelines focus on new batteries; however, shipment requirements for used or degraded less clear. Current international regulations regarding air transport lithium-ion critically reviewed. The pre-shipping tests outlined evaluated assess their ability fully mitigate risks during battery transport. In particular, shipping second-use considered....

Electric vehicles (EVs), which are powered by lithium batteries, will penetrate the automobile market within next few years. This is mainly due to increasing concerns of global warming and fossil fuel depletion. However, there still some challenges for EVs that remain be solved. The most notable one state charge (SOC) estimation prediction relieving EV drivers' range anxiety. To address this problem, an equivalent circuit model built simulate battery behavior under dynamical loading...

This work examines the printing of optical-based materials using aerosol jet (AJP), an additive manufacturing process. Deposition AJP process has potential to be applied in fabrication embedded fiber optic Bragg grating sensors. Made from silica (SiO2), sensors are small, lightweight, and chemically inert, making them suitable for a variety applications. study preparation deposition newly developed silica-based ink. The results method, impact various processing parameters on quality...

Battery energy storage and management systems constitute an enabling technology for more sustainable transportation power grid systems. On the one hand, emerging materials chemistries of batteries are being actively synthesized to continually improve their density, cycle life, charging rate, etc. other advanced battery (BMSs) intensively developed guarantee safety, reliability, efficiency, cost-effectiveness in realistic operations, as well integration with mechatronics. Owing multi-physics...