Journal of Electrochemical Energy Conversion and Storage最新文献_第2页

Development of a CFD Simulation Framework for Aerothermal Analyses of Electric Vehicle Battery Packs 电动汽车电池组空气热分析CFD仿真框架的开发

4区工程技术

Journal of Electrochemical Energy Conversion and Storage Pub Date : 2023-11-08 DOI: 10.1115/1.4063800

Adit Misar, Ayushi Jain, Jun Xu, Mesbah Uddin

{"title":"Development of a CFD Simulation Framework for Aerothermal Analyses of Electric Vehicle Battery Packs","authors":"Adit Misar, Ayushi Jain, Jun Xu, Mesbah Uddin","doi":"10.1115/1.4063800","DOIUrl":"https://doi.org/10.1115/1.4063800","url":null,"abstract":"Abstract The rise of electric vehicles has driven the extensive adoption of lithium-ion batteries (LIBs) due to their favorable attributes—compactness, low resistance, high power density, and minimal self-discharge. To enhance LIB reliability, an efficient battery thermal management system is imperative. This paper introduces a finite volume-based aerothermal analysis framework for a 32-cell high-energy density LIB pack. We also explore the effectiveness of various turbulence models in capturing local hotspots, discharge rates, and current levels across different geometries and inlet velocities. Our approach involves modeling the battery using Simcenter Battery Design Studio and importing it into Simcenter star-ccm+ for aerothermal simulations in which temperature distribution, discharge rates, current levels, and maximum temperature across are monitored for aligned, cross, and staggered configurations of the battery pack under varying inlet velocities. Our findings highlight the significant impact of boundary condition modeling on simulation stability. Also we observed that the standard k–ε model provides the most accurate predictions, with prediction accuracy within 3–10% of experimental data. Moreover, we identify substantial dependencies between heat generation and discharge current, as well as thermal gradients and inlet velocity. Finally, we conclude that the aligned cell arrangement offers the best thermal uniformity and cooling efficiency.","PeriodicalId":15579,"journal":{"name":"Journal of Electrochemical Energy Conversion and Storage","volume":" 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135293282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental study of the thermal management system of an air-cooled Li-ion battery pack with triangular spoilers 带有三角形扰流板的风冷锂离子电池组热管理系统的实验研究

4区工程技术

Journal of Electrochemical Energy Conversion and Storage Pub Date : 2023-11-06 DOI: 10.1115/1.4063998

Satya Verma, Samir Saraswati

{"title":"Experimental study of the thermal management system of an air-cooled Li-ion battery pack with triangular spoilers","authors":"Satya Verma, Samir Saraswati","doi":"10.1115/1.4063998","DOIUrl":"https://doi.org/10.1115/1.4063998","url":null,"abstract":"Abstract This research experimentally examines the thermal behaviour of an air-cooled Li-ion battery pack with triangular spoilers. The objective is to enhance temperature uniformity and reduce the maximum temperature of the battery pack by redirecting airflow towards regions of higher temperatures using triangular spoilers. The effects of spoiler angles (a) and spoiler positions (Ds) on the thermal performance of a 24V, 10Ah aligned battery pack are investigated. The parameters used to evaluate the thermal performance are; temperature variation along as well as transverse to the airflow direction and temperature variation around the circumference of the cell. The maximum temperature (Tmax), average temperature (Tavg.), maximum temperature difference (ΔTmax), and standard deviation of the temperature (σT) are the other performance parameters that are assessed. It is observed that the temperature of the battery pack decreases along the airflow direction with both the increase in α and Ds. It happens due to the enhancement in the heat transfer rate caused by higher turbulence kinetic energy. The non-uniformity in the cell temperature around the circumference improves by 0.4 K and 1.8 K with the change in α and Ds, respectively. It is found that Tmax and Tavg. of the battery pack are reduced by a maximum value of 2.5 K and 1.55 K, respectively, compared to the case when no spoiler is used. The maximum reduction in ΔTmax and σT is found to be 2.4 K and 1.02, respectively.","PeriodicalId":15579,"journal":{"name":"Journal of Electrochemical Energy Conversion and Storage","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135634599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental and Theoretical Analysis of Immersion Cooling of a Li-Ion Battery Module 锂离子电池模块浸没冷却的实验与理论分析

4区工程技术

Journal of Electrochemical Energy Conversion and Storage Pub Date : 2023-10-27 DOI: 10.1115/1.4063914

Swapnil Salvi, Bapiraju Surampudi, Andre Swarts, Jayant Sarlashkar, Ian Smith, Terry Alger, Ankur Jain

{"title":"Experimental and Theoretical Analysis of Immersion Cooling of a Li-Ion Battery Module","authors":"Swapnil Salvi, Bapiraju Surampudi, Andre Swarts, Jayant Sarlashkar, Ian Smith, Terry Alger, Ankur Jain","doi":"10.1115/1.4063914","DOIUrl":"https://doi.org/10.1115/1.4063914","url":null,"abstract":"Abstract Overheating of Li-ion cells and battery packs is an ongoing technological problem for electrochemical energy conversion and storage devices and systems, including in electric vehicles. Immersion cooling is a promising thermal management technique to address these challenges. This work presents experimental and theoretical analysis of the thermal and electrochemical impact of immersion cooling of a small module of Li-ion cells. Significant reduction in both surface and core temperature due to immersion cooling is observed, consistent with theoretical and simulation models developed here. However, immersion cooling is also found to result in a small but non-negligible increase in capacity fade of the cells. A number of hypotheses are formed and systematically tested through comparison of experimental measurements with theoretical modeling and simulations. Electrochemical Impedance Spectroscopy measurements indicate that the accelerated cell aging due to immersion cooling is likely to be due to enhanced lithium plating. Therefore, careful consideration of the impact of immersion cooling on long-term performance may be necessary. The results presented in this work quantify both thermal and electrochemical impacts of an important thermal management technique for Li-ion cells. These results may be of relevance for design and optimization of electrochemical energy conversion and storage systems.","PeriodicalId":15579,"journal":{"name":"Journal of Electrochemical Energy Conversion and Storage","volume":"217 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136264063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamic electrochemical action of Low temperature Plasma exposed NaFePO4/activated BCC Nanocomposites in Cathode applications 低温等离子体暴露NaFePO4/活化BCC纳米复合材料在阴极中的动态电化学作用

4区工程技术

Journal of Electrochemical Energy Conversion and Storage Pub Date : 2023-10-27 DOI: 10.1115/1.4063909

S Saveetha, KA Vijayalakshmi

引用次数: 0

Lithium battery liquid-cooled thermal management system of stepped-channel based on lightweight 基于轻量化的阶梯通道锂电池液冷热管理系统

4区工程技术

Journal of Electrochemical Energy Conversion and Storage Pub Date : 2023-10-20 DOI: 10.1115/1.4063848

Long Zhou, Shengnan Li, Ankur Jain, Guoqiang Chen, Desui Guo, Jincan Kan, Yong Zhao

{"title":"Lithium battery liquid-cooled thermal management system of stepped-channel based on lightweight","authors":"Long Zhou, Shengnan Li, Ankur Jain, Guoqiang Chen, Desui Guo, Jincan Kan, Yong Zhao","doi":"10.1115/1.4063848","DOIUrl":"https://doi.org/10.1115/1.4063848","url":null,"abstract":"Abstract This study proposes a stepped channel liquid-cooled battery thermal management system based on lightweight. The impact of channel width, cell-to-cell lateral spacing, contact height, and contact angle on the effectiveness of the TCS is investigated through using numerical simulation. The weight sensitivity factor is adopted to evaluate the effect of TCS weight (mTCS) on the maximum temperature (Tmax) of battery pack. Results suggest that the channel width plays the most critical role, followed by cell-to-cell lateral spacing and contact angle, while the contact height has minimal influence. Four parameters that affect the thermal balance performance of battery pack, including the number of channels, and baffles, baffle angle, and coolant inlet velocity, are presented using orthogonal experiment. Results indicate that the number of channels and baffle angle have a significant influence on the thermal balance of battery pack, while thermal performance is largely insensitive to coolant inlet velocity and number of baffles. Based on the analysis stated in this work, an improved design of the TCS is presented that reduces weight by 54.08% while increasing Tmax only by 2.52 K.","PeriodicalId":15579,"journal":{"name":"Journal of Electrochemical Energy Conversion and Storage","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135570124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-Accuracy Battery SOC Estimation Strategy Based on Deep Belief Network Cascaded with Extended Kalman Filter 基于扩展卡尔曼滤波级联深度信念网络的电池荷电状态高精度估计策略

4区工程技术

Journal of Electrochemical Energy Conversion and Storage Pub Date : 2023-10-13 DOI: 10.1115/1.4063431

Xiaoyu Liu, Lang Chen, Lijun Zhu, Jian Wang, Long Chen, Xiankai Zeng, Ziang Song, Lujun Wang

{"title":"High-Accuracy Battery SOC Estimation Strategy Based on Deep Belief Network Cascaded with Extended Kalman Filter","authors":"Xiaoyu Liu, Lang Chen, Lijun Zhu, Jian Wang, Long Chen, Xiankai Zeng, Ziang Song, Lujun Wang","doi":"10.1115/1.4063431","DOIUrl":"https://doi.org/10.1115/1.4063431","url":null,"abstract":"Abstract Battery state of charge (SOC) estimation is one of the main functions of the battery management system in electric vehicles. If the actual SOC of the battery differs significantly from the estimated value, it can lead to improper battery usage, resulting in unexpected rapid voltage drops or increases, which can affect driving safety. Therefore, high-accuracy SOC estimation is of great importance for battery management and usage. Currently used SOC estimation methods suffer from issues such as strong dependence on model parameters, error propagation from measurements, and sensitivity to initial values. In this study, we propose a high-precision SOC estimation strategy based on deep belief network (DBN) feature extraction and extended Kalman filter (EKF) for smooth output. The proposed strategy has been rigorously tested under different temperature conditions using the dynamic stress test (DST) and urban dynamometer driving schedule (US06) driving cycles. The mean absolute error (MAE) and root-mean-square error (RMSE) of the proposed strategy are controlled within 1.1% and 1.2%, respectively. This demonstrates the high-precision estimation achieved. To further validate the generality of this strategy, we also apply it to graphene batteries and conduct tests under US06 and highway fuel economy test (HWFET) driving cycles at temperatures of 25 °C and −10 °C. The test results show MAE of 0.47% and 2.01%, respectively.","PeriodicalId":15579,"journal":{"name":"Journal of Electrochemical Energy Conversion and Storage","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135804889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

DEVELOPMENT OF BORON CONTAINING ELECTROLYTE ADDITIVE FOR LITHIUM ION BATTERIES 锂离子电池含硼电解质添加剂的研制

4区工程技术

Journal of Electrochemical Energy Conversion and Storage Pub Date : 2023-10-05 DOI: 10.1115/1.4063429

Zahid Sarigol, Gulay Ozkan, Goksel Ozkan

引用次数: 0

Nano graphite-doped Spartina alterniflora-based hard carbon as high performance anode for sodium-ion batteries 纳米石墨掺杂互花米草硬碳作为钠离子电池的高性能阳极

4区工程技术

Journal of Electrochemical Energy Conversion and Storage Pub Date : 2023-10-05 DOI: 10.1115/1.4063397

Hongkuan Cheng, Qihang Shu, Huanyu Wei, Xingzhang Luo, Suzhen Huang, Zheng Zheng

引用次数: 0

State of charge estimation of lithium–ion battery based on IDRSN and BiGRU 基于IDRSN和BiGRU的锂离子电池充电状态估计

4区工程技术

Journal of Electrochemical Energy Conversion and Storage Pub Date : 2023-10-05 DOI: 10.1115/1.4063173

Jiahao Zhang, Jiadui Chen, Ling He, Dan Liu, Kai Yang, Qinghua Liu

{"title":"State of charge estimation of lithium–ion battery based on IDRSN and BiGRU","authors":"Jiahao Zhang, Jiadui Chen, Ling He, Dan Liu, Kai Yang, Qinghua Liu","doi":"10.1115/1.4063173","DOIUrl":"https://doi.org/10.1115/1.4063173","url":null,"abstract":"Abstract The estimation of state of charge (SOC) is a critical issue in the energy management of electric vehicle (EV) power batteries. However, the current accuracy of SOC estimation methods does not meet the requirements of practical applications. Therefore, this study proposes an improved lithium-ion battery SOC estimation method that combines deep residual shrinkage network (DRSN) and bidirectional gated recurrent unit (BiGRU) to enhance the SOC estimation accuracy. First, we insert the bidirectional gated recurrent unit neural network between the global average pooling layer and the output fully connected layer of the deep residual shrinkage network. This improvement enhances the model’s expressiveness, robustness, and data learning effect. Second, we develop a new activation function called “∂_swish” to replace the original ReLU activation function in the deep residual shrinkage network. The ∂_swish activation function improves the accuracy of the deep network model and reduces the risk of overfitting by utilizing its regularization effect. Finally, we conduct experimental tests at three different temperatures using the FUDS driving cycle dataset and the DST-US06-FUDS continuous driving cycle dataset. The algorithm model’s convergence speed is verified by comparing it with other models. The results show that compared to other models, the proposed method significantly improves SOC estimation accuracy at three different temperatures. In addition, the method demonstrates a high convergence speed.","PeriodicalId":15579,"journal":{"name":"Journal of Electrochemical Energy Conversion and Storage","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134948204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A review on low-temperature performance management of lithium-ion batteries 锂离子电池低温性能管理研究进展

4区工程技术

Journal of Electrochemical Energy Conversion and Storage Pub Date : 2023-10-03 DOI: 10.1115/1.4063611

Jincheng Zhan, Yifei Deng, Yaohui Gao, Jiaoyi Ren, Yuang Liu, Rao Shun, Weifeng Li, Zhenhai Gao, Yupeng Chen

引用次数: 0