Download e-book for iPad: Automotive Battery Technology by Helmut Martin, Andrea Leitner, Bernhard Winkler (auth.),

By Helmut Martin, Andrea Leitner, Bernhard Winkler (auth.), Alexander Thaler, Daniel Watzenig (eds.)

ISBN-10: 3319025228

ISBN-13: 9783319025223

ISBN-10: 3319025236

ISBN-13: 9783319025230

The use of electrochemical strength garage structures in automobile functions additionally includes new specifications for modeling those structures, specifically when it comes to version intensity and version caliber. at the moment, mostly easy application-oriented versions are used to explain the actual habit of batteries. This publication offers a step past of state of the art modeling exhibiting quite a few varied techniques overlaying following points: procedure security, misuse habit (crash, thermal runaway), battery nation estimation and electrochemical modeling with the wanted research (pre/post mortem). All this assorted methods are constructed to help the general integration technique from a multidisciplinary point-of-view and depict their additional improvements to this process.

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Due to the jelly roll deformation, internal short circuits—between the electrodes or from an electrode to the casing—can lead to heat generation and exothermal reactions. Concerning the deformation modelling, there are two possible approaches to follow. g. the fracture of electrode layers, critical contacts or delamination—examples shown in Fig. 13) [14]. This microscopic approach can support the understanding of the jelly roll failure mechanisms and the development of suitable macroscopic jelly roll material models.

The other main factor for the strength of the battery system is the failure of joints. Depending on the joining concept, a battery system can contain adhesives, spot welds, laser welds, screws, or rivets, for example. In recent years, the failure of joints has been an important research topic in crash simulation. Therefore, various models for adhesives [26] and single-point connections such as spot welds and screws [27–30] are available and ready to use (see Fig. 12). For the failure of the jelly roll, as with the non-active battery components, the failure assessment is based on an accurate description of the deformation.

6 Detected components of the produced gases (mol %) 48 A. W. Golubkov and D. Fuchs Fig. 7 Temperatureventgas profiles. 3). The amount of gas strongly depended on the cell type. The highest amount of gas was released by the LCO/NMC cell, followed by the NMC cell. The LFP cell yielded the least amount of gas. Two successive gas production events were evident in all experiments (Fig. 7): 1. In the first venting event, prior to rapid thermal runaway, the burst plate of the battery opened, and ∼20 mmol were released by all three cell types.

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Automotive Battery Technology by Helmut Martin, Andrea Leitner, Bernhard Winkler (auth.), Alexander Thaler, Daniel Watzenig (eds.)

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