A study on the accelerated vibration endurance tests for battery fixing bracket in electrically driven vehicles

Choi, Youngwoo; Jung, Dong-Ho; Ham, Kyoung-Chun; Bae, Sung In

doi:10.1016/j.proeng.2011.04.140

Cited by 14 publications

(9 citation statements)

References 2 publications

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“…A single-axis acceleration experiment technique, which is more reliable and quicker, was suggested by transforming the vibration record into power spectrum density, supporting the correspondence among the experiment time and acceleration factor and proposing a driving interval conversion method commensurate with the experiment time [18]. Moreover, while running the single-axis acceleration experiment, the vibration record in four locations was determined symmetrically; afterward, through virtual destruction investigation, a technique that implements the strictest vibration record was suggested [18].…”

Section: Overview Of Mechanical Stresses On Lithium-ion Batteriesmentioning

confidence: 88%

Characterization of the Compressive Load on a Lithium-Ion Battery for Electric Vehicle Application

2021

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Lithium-ion batteries are being implemented in different large-scale applications, including aerospace and electric vehicles. For these utilizations, it is essential to improve battery cells with a great life cycle because a battery substitute is costly. For their implementation in real applications, lithium-ion battery cells undergo extension during the course of discharging and charging. To avoid disconnection among battery pack ingredients and deformity during cycling, compacting force is exerted to battery packs in electric vehicles. This research used a mechanical design feature that can address these issues. This investigation exhibits a comprehensive description of the experimental setup that can be used for battery testing under pressure to consider lithium-ion batteries’ safety, which could be employed in electrified transportation. Besides, this investigation strives to demonstrate how exterior force affects a lithium-ion battery cell’s performance and behavior corresponding to static exterior force by monitoring the applied pressure at the dissimilar state of charge. Electrochemical impedance spectroscopy was used as the primary technique for this research. It was concluded that the profiles of the achieved spectrums from the experiments seem entirely dissimilar in comparison with the cases without external pressure. By employing electrochemical impedance spectroscopy, it was noticed that the pure ohmic resistance, which is related to ion transport resistance of the separator, could substantially result in the corresponding resistance increase.

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Section: Overview Of Mechanical Stresses On Lithium-ion Batteriesmentioning

confidence: 88%

Characterization of the Compressive Load on a Lithium-Ion Battery for Electric Vehicle Application

2021

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“…For example, the standard requires the SOC at 100% and 20% to be complete, but a 75% SOC was used according to the literature [23]. In addition, the standard requires both X-axis and Y-axis direction to be used to conduct a certain vibration test, but it was noted within [9,17,21] that the Z-axis vibration displayed a greater tendency for electrical degradation. The Z-axis profile was only loaded in this paper, in order to eliminate the influence of the non-main vibration direction on the electrical performance.…”

Section: Design Of Vibration Testmentioning

confidence: 99%

“…In Ref. [9] the vibration durability of the battery tray was studied through experimentation and simulation techniques. The results showed that the load spectrum simulation experiment could reflect the road-induced vibration well.…”

Section: Introductionmentioning

confidence: 99%

Effects of Vibration on the Electrical Performance of Lithium-Ion Cells Based on Mathematical Statistics

Zhang

Ning

et al. 2017

Applied Sciences

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Lithium-ion batteries are increasingly used in mobile applications where mechanical vibrations and shocks are a constant companion. There is evidence both in the academic and industrial communities to suggest that the electrical performance and mechanical properties of the lithium-ion cells of an electric vehicle (EV) are affected by the road-induced vibration. However, only a few studies related to the effects of vibration on the degradation of electrical performance of lithium-ion batteries have been approached. Therefore, this paper aimed to investigate the effects of vibration on the DC resistance, 1C capacity and consistency of NCR18650BE lithium-ion cells. Based on mathematical statistics, the method changes of the DC resistance and the capacity of the cells both before and after the test were analyzed with a large sample size. The results identified that a significant increase in DC resistance was observed as a result of vibration at the 95% confidence level, while typically a reduction in 1C capacity was also noted. In addition, based on a multi-feature quantity, a clustering algorithm was adopted to analyze the effect of vibration on cell consistency; the results show that the cell consistency had deteriorated after the vibration test.

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“…Youngwoo Choia et al [4] have studied the measured acceleration signals are analyzed virtual damage and frequencies by extending the 160,000 km. For the accelerated vibration test, the acceleration test of six degrees of freedom (DOF) in the time domain using MAST and the acceleration test of single-DOF in the frequency domain using single axis equipment are performed.…”

Section: Brief Overview Of Some Researchmentioning

confidence: 99%

Finite Element Analysis and Natural Frequency Optimization of Engine Bracket

Ghorpade

Chavan

Patil³

et al. 2013

IJMIE

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The automotive engine mounting systems are very important due to different aspects of vehicle performance. Early in improvement the building of the engine mounting system should be rapidly checked and precisely analyzed, without sample of a vehicle authorization. Engine bracket has been designed as a framework to support engine. Vibration and fatigue of engine bracket has been continuously a concern which may lead to structural failure if the resulting vibration and stresses are severe and excessive. It is a significant study which requires in-depth investigation to understand the structural characteristics and its dynamic behavior. This paper presents and focuses on some Finite Element (FE) analysis of a typical engine bracket of a car will be carried out and natural frequency will be determined.

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A study on the accelerated vibration endurance tests for battery fixing bracket in electrically driven vehicles

Cited by 14 publications

References 2 publications

Characterization of the Compressive Load on a Lithium-Ion Battery for Electric Vehicle Application

Characterization of the Compressive Load on a Lithium-Ion Battery for Electric Vehicle Application

Effects of Vibration on the Electrical Performance of Lithium-Ion Cells Based on Mathematical Statistics

Finite Element Analysis and Natural Frequency Optimization of Engine Bracket

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