Comprehensive gas analysis on large scale automotive lithium-ion cells in thermal runaway

Koch, Sascha; Fill, Alexander; Birke, Kai Peter

doi:10.1016/j.jpowsour.2018.07.051

Cited by 187 publications

(89 citation statements)

References 41 publications

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“…Formation AED [224] MS [195,218,225,226] TCD [57,196,227] n/a [228] Cyclic Aging FID [229] MS [230] TCD [229] n/a [231] Overcharge FID [152] FTIR [152,153] MS [232] TCD [153] n/a [233] Thermal Runaway/Abuse Conditions (ARC, etc.) FID [234] FTIR [198] MS [198,235] TCD [234,[236][237][238][239][240] VUV [217] n/a [241,242] Model Aging of LIB Components (Thermal; Radiolysis, etc.) FTIR [243,244] MS [151,207,208,211,[243][244][245][246][247][248][249][250] TCD [207,208,…”

Section: Origin Of the Gases Detector Referencesmentioning

confidence: 99%

“…A variety of fully charged NCM-based cells dedicated to automotive applications was forced into thermal runaway by Koch et al [240]. The emerging gases were extracted from the utilized autoclave setup and quantified by GC-TCD.…”

Section: Origin Of the Gases Detector Referencesmentioning

confidence: 99%

“…Therein, distinct changes were reported, e.g., the strongly increased ethene fractions in the gas obtained from the first venting incident of the cells stored at 60 °C. A variety of fully charged NCM-based cells dedicated to automotive applications was forced into thermal runaway by Koch et al [240]. The emerging gases were extracted from the utilized autoclave setup and quantified by GC-TCD.…”

Section: Origin Of the Gases Detector Referencesmentioning

confidence: 99%

See 2 more Smart Citations

Chromatographic Techniques in the Research Area of Lithium Ion Batteries: Current State-of-the-Art

et al. 2019

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Lithium ion batteries (LIBs) are widely used in numerous application areas, including portable consumer electronics, medicine, grid storage, electric vehicles and hybrid electric vehicles. One major challenge during operation and storage is the degradation of the cell constituents, which is called aging. This phenomenon drastically reduces both storage lifetime and cycle lifetime. Due to numerous aging effects, originating from both the individual LIB cell constituents as well as their interactions, a wide variety of instruments and methods are necessary for aging investigations. In particular, chromatographic methods are frequently applied for the analysis of the typically used liquid non-aqueous battery electrolytes based on organic solvents or ionic liquids. Moreover, chromatographic methods have also been recently used to investigate the composition of electrode materials. In this review, we will give an overview of the current state of chromatographic methods in the context of LIB cell research.

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Section: Origin Of the Gases Detector Referencesmentioning

confidence: 99%

Section: Origin Of the Gases Detector Referencesmentioning

confidence: 99%

Section: Origin Of the Gases Detector Referencesmentioning

confidence: 99%

See 1 more Smart Citation

Chromatographic Techniques in the Research Area of Lithium Ion Batteries: Current State-of-the-Art

et al. 2019

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“…For example, Melcher et al [6] gained a better understanding of the temperature increase process within the battery cell considering different heat sources under specified working conditions and found out the triggering condition of thermal runaway. Similarly, Koch et al [7] analyzed the composition and amount of gases generated during thermal runaway. Abada et al [8] studied the evolution of voltage and temperature during the thermal runaway process by combining experiments and models.…”

Section: Introductionmentioning

confidence: 99%

DBSCAN-Based Thermal Runaway Diagnosis of Battery Systems for Electric Vehicles

Zhang

Liu

et al. 2019

Energies

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Battery system diagnosis and prognosis are essential for ensuring the safe operation of electric vehicles (EVs). This paper proposes a diagnosis method of thermal runaway for ternary lithium-ion battery systems based on the Density-Based Spatial Clustering of Applications with Noise (DBSCAN) clustering. Two-dimensional fault characteristics are first extracted according to battery voltage, and DBSCAN clustering is used to diagnose the potential thermal runaway cells (PTRC). The periodic risk assessing strategy is put forward to evaluate the fault risk of battery cells. The feasibility, reliability, stability, necessity, and robustness of the proposed algorithm are analyzed, and its effectiveness is verified based on datasets collected from real-world operating electric vehicles. The results show that the proposed method can accurately predict the locations of PTRC in the battery pack a few days before the thermal runaway occurrence.

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“…These cell mismatches can also increase through degradation or cell connection errors and need to be properly handled [8][9][10]. High capacity cells tend to pose a bigger threat in case of a thermal runaway (TR) [11,12]. This leads to aising the question of what cell size and connection is optimal in terms of safety.…”

Section: Introductionmentioning

confidence: 99%

Discharge by Short Circuit Currents of Parallel-Connected Lithium-Ion Cells in Thermal Propagation

et al. 2019

Self Cite

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The increasing need for high capacity batteries in plug-in hybrids and all-electric vehicles gives rise to the question of whether these batteries should be equipped with a few large capacity cells or rather many low capacity cells in parallel. This article demonstrates the possible benefits of smaller cells connected in parallel because of discharge effects. Measurements have been conducted proving the beneficial influence of a lower SoC on the thermal runaway behaviour of lithium-ion cells.A second test series examines the short circuit currents during an ongoing thermal propagation in parallel-connected cells. With the help of a developed equivalent circuit model and the results of the test series two major system parameters, the ohmic resistance of a cell during thermal runaway R tr and the resistance post thermal runaway R ptr are extracted for the test set-up. A further developed equivalent circuit model and its analytical description are presented and illustrate the great impact of R ptr on the overall discharged capacity. According to the model, cells with a capacity of no more than C cell = 10-15 Ah and a parallel-connection of 24 cells show the most potential to discharge a significant amount.

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Comprehensive gas analysis on large scale automotive lithium-ion cells in thermal runaway

Cited by 187 publications

References 41 publications

Chromatographic Techniques in the Research Area of Lithium Ion Batteries: Current State-of-the-Art

Chromatographic Techniques in the Research Area of Lithium Ion Batteries: Current State-of-the-Art

DBSCAN-Based Thermal Runaway Diagnosis of Battery Systems for Electric Vehicles

Discharge by Short Circuit Currents of Parallel-Connected Lithium-Ion Cells in Thermal Propagation

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