scholarly journals Performance Analysis of Indentation Punch on High Energy Lithium Pouch Cells and Simulated Model Improvement

Polymers ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 1971
Author(s):  
Lihua Ye ◽  
Muhammad Muzamal Ashfaq ◽  
Aiping Shi ◽  
Syyed Adnan Raheel Shah ◽  
Yefan Shi
Keyword(s):  
Short Circuit ◽  
Lithium Ion ◽  
Mechanical Deformation ◽  
High Energy ◽  
State Of Charge ◽  
Punch Test ◽  
Short Course ◽  
Model Cell ◽  
The Impact

In this research, the aim relates to the material characterization of high-energy lithium-ion pouch cells. The development of appropriate model cell behavior is intended to simulate two scenarios: the first is mechanical deformation during a crash and the second is an internal short circuit in lithium-ion cells during the actual effect scenarios. The punch test has been used as a benchmark to analyze the effects of different state of charge conditions on high-energy lithium-ion battery cells. This article explores the impact of three separate factors on the outcomes of mechanical punch indentation experiments. The first parameter analyzed was the degree of prediction brought about by experiments on high-energy cells with two different states of charge (greater and lesser), with four different sizes of indentation punch, from the cell’s reaction during the indentation effects on electrolyte. Second, the results of the loading position, middle versus side, are measured at quasi-static speeds. The third parameter was the effect on an electrolyte with a different state of charge. The repeatability of the experiments on punch loading was the last test function analyzed. The test results of a greater than 10% state of charge and less than 10% state of charge were compared to further refine and validate this modeling method. The different loading scenarios analyzed in this study also showed great predictability in the load-displacement reaction and the onset short circuit. A theoretical model of the cell was modified for use in comprehensive mechanical deformation. The overall conclusion found that the loading initiating the cell’s electrical short circuit is not instantaneously instigated and it is subsequently used to process the development of a precise and practical computational model that will reduce the chances of the internal short course during the crash.

scholarly journals Energy Evaluation of a PV-Based Test Facility for Assessing Future Self-Sufficient Buildings

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 329
Author(s):  
Angela Amato ◽  
Matteo Bilardo ◽  
Enrico Fabrizio ◽  
Valentina Serra ◽  
Filippo Spertino
Keyword(s):  
Real Life ◽  
Lithium Ion ◽  
Energy Performance ◽  
High Energy ◽  
Test Facility ◽  
Local Energy ◽  
Community Concept ◽  
Energy Sharing ◽  
The Impact ◽  
Photovoltaic Generators

In recent years, investigations on advanced technological solutions aiming to achieve high-energy performance in buildings have been carried out by research centers and universities, in accordance with the reduction in buildings’ energy consumption required by European Union. However, even if the research and design of new technological solutions makes it possible to achieve the regulatory objectives, a building’s performance during operation deviates from simulations. To deepen this topic, interesting studies have focused on testing these solutions on full-scale facilities used for real-life activities. In this context, a test facility will be built in the university campus of Politecnico di Torino (Italy). The facility has been designed to be an all-electric nearly Zero Energy Building (nZEB), where heating and cooling demand will be fulfilled by an air-source heat pump and photovoltaic generators will meet the energy demand. In this paper, the facility energy performance is evaluated through a dynamic simulation model. To improve energy self-sufficiency, the integration of lithium-ion batteries in a HVAC system is investigated and their storage size is optimized. Moreover, the facility has been divided into three units equipped with independent electric systems with the aim of estimating the benefits of local energy sharing. The simulation results clarify that the facility meets the expected energy performance, and that it is consistent with a typical European nZEB. The results also demonstrate that the local use of photovoltaic energy can be enhanced thanks to batteries and local energy sharing, achieving a greater independence from the external electrical grid. Furthermore, the analysis of the impact of the local energy sharing makes the case study of particular interest, as it represents a simplified approach to the energy community concept. Thus, the results clarify the academic potential for this facility, in terms of both research and didactic purposes.

Formulation and characterization of ultra-thick electrodes for high energy lithium-ion batteries employing tailored metal foams

2011 ◽  
Vol 196 (20) ◽  
pp. 8714-8718 ◽  
Author(s):  
John S. Wang ◽  
Ping Liu ◽  
Elena Sherman ◽  
Mark Verbrugge ◽  
Harshad Tataria
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
High Energy ◽  
Metal Foams

scholarly journals Fabrication and characterization of silicon-based 3D electrodes for high-energy lithium-ion batteries

2017 ◽  
Author(s):  
Y. Zheng ◽  
P. Smyrek ◽  
J.-H. Rakebrandt ◽  
Ch. Kübel ◽  
H. J. Seifert ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
High Energy ◽  
3D Electrodes ◽  
Fabrication And Characterization ◽  
Silicon Based

Comparative Analysis of Aqueous Binders for High-Energy Li-Rich NMC as a Lithium-Ion Cathode and the Impact of Adding Phosphoric Acid

2018 ◽  
Vol 10 (20) ◽  
pp. 17214-17222 ◽  
Author(s):  
Arefeh Kazzazi ◽  
Dominic Bresser ◽  
Agnese Birrozzi ◽  
Jan von Zamory ◽  
Maral Hekmatfar ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Phosphoric Acid ◽  
Lithium Ion ◽  
High Energy ◽  
The Impact

scholarly journals Effects of State-of-Charge and Penetration Location on Variations in Temperature and Terminal Voltage of a Lithium-Ion Battery Cell during Penetration Tests

Batteries ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 81
Author(s):  
Yiqun Liu ◽  
Yitian Li ◽  
Y. Gene Liao ◽  
Ming-Chia Lai
Keyword(s):  
Experimental Data ◽  
Short Circuit ◽  
Lithium Ion ◽  
State Of Charge ◽  
Initial State ◽  
Battery Cell ◽  
Temperature Increment ◽  
Terminal Voltage ◽  
Internal Short Circuit ◽  
Penetration Tests

The nail penetration test has been widely adopted as a battery safety test for reproducing internal short-circuits. In this paper, the effects of cell initial State-of-Charge (SOC) and penetration location on variations in cell temperature and terminal voltage during penetration tests are investigated. Three different initial SOCs (10%, 50%, and 90%) and three different penetration locations (one is at the center of the cell, the other two are close to the edge of the cell) are used in the tests. Once the steel cone starts to penetrate the cell, the cell terminal voltage starts to drop due to the internal short-circuit. The penetration tests with higher initial cell SOCs have larger cell surface temperature increases during the tests. Also, the penetration location always has the highest temperature increment during all penetration tests, which means the heat source is always at the penetration location. The absolute temperature increment at the penetration location is always higher when the penetration is close to the edge of the cell, compared to when the penetration is at the center of the cell. The heat generated at the edges of the cell is more difficult to dissipate. Additionally, a battery cell internal short-circuit model with different penetration locations is built in ANSYS Fluent, based on the specifications and experimental data of the tested battery cells. The model is validated with an acceptable discrepancy range by using the experimental data. Simulated data shows that the temperature gradually reduces from penetration locations to their surroundings. The gradients of the temperature distributions are much larger closer to the penetration locations. Overall, this paper provides detailed information on the temperature and terminal voltage variations of a lithium-ion polymer battery cell with large capacity and high power under penetration tests. The presented information can be used for assessing the safety of the onboard battery pack of electric vehicles.

Preparation and Characterization of Li1.12K0.05Mn0.57Ni0.24Nb0.02O2 Cathode Material with Highly Improved Rate Cyclic Performance for Lithium Ion Batteries

Nanoscale ◽  
2021 ◽  
Author(s):  
Cong Liu ◽  
Shuang Zhang ◽  
Yuanyuan Feng ◽  
Xiaowei Miao ◽  
Gang Yang ◽  
...  
Keyword(s):  
Energy Density ◽  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Lithium Ion Battery ◽  
Elemental Analysis ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Cyclic Performance

In this work, Li1.12K0.05Mn0.57Ni0.24Nb0.02O2 (LMN-K/Nb) as a novel and high energy density cathode material is successfully synthesized and applied in lithium ion battery. Combining interlayer exchanging and elemental analysis, it...

Electrochemical Cycle-Life Characterization of High Energy Lithium-Ion Cells with Thick Li(Ni0.6Mn0.2Co0.2)O2and Graphite Electrodes

2017 ◽  
Vol 164 (6) ◽  
pp. A1037-A1049 ◽  
Author(s):  
Yongjun Leng ◽  
Shanhai Ge ◽  
Dan Marple ◽  
Xiao-Guang Yang ◽  
Christoph Bauer ◽  
...  
Keyword(s):  
Lithium Ion ◽  
High Energy ◽  
Cycle Life ◽  
Graphite Electrodes ◽  
Lithium Ion Cells
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