純電動車用18650電池的一致性研究

安富強; 趙建源; 陳璐凡; 黃俊; 李平

doi:10.13374/j.issn2095-9389.2017.01.014

純電動車用18650電池的一致性研究

doi: 10.13374/j.issn2095-9389.2017.01.014

安富強^1,2,
趙建源²,
陳璐凡²,
黃俊³,
李平^1, ,

1) 北京科技大學新材料技術研究院, 北京 100083
2) 波士頓電池技術有限公司, 北京 100015
3) 清華大學汽車工程系, 北京 100084

基金項目:

國家自然科學基金資助項目（51172024）

詳細信息

中圖分類號: U469.7
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- 被引次數: 0
出版歷程
- 收稿日期: 2016-03-18

Consistency study on 18650 cells used in electric vehicles

1) Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
2) Boston-Power Battery CO., Beijing 100015, China
3) Department of Automotive Engineering, Tsinghua University, Beijing 100084, China

摘要

摘要: 通過對國內外五款純電動車用18650電池進行電化學性能測試、變異系數分析和相關性分析，評估電池在初始階段和老化過程中的一致性，并系統分析電流、溫度及電壓范圍對電池一致性的影響.結果表明：為了提高純電動車用18650電池全壽命周期內的一致性，必須控制充電倍率小于0.3C，放電倍率小于0.5C，使用溫度高于0℃.此外，優化電池篩選工藝也是改善電池一致性的一個重要方法.初始篩選時加入能夠表征壽命因素的特征參數k值，即靜置時開路電壓的下降速率，是非常有效的.
- 純電動車 /
- 鋰離子電池 /
- 一致性分析 /
- 電化學性能 /
- 統計分析
Abstract: The consistency of five different 18650 cells used in electric vehicles both at the initial and aged states was evaluated by electrochemical test and statistical analysis. The effects of current, temperature and voltage on the cell consistency were examined. The results show that, to ensure a reasonable level of the cell consistency, the current rates during the charging and discharging processes should be less than 0.3C and 0.5C, respectively, and the operating temperature should be higher than 0℃. In addition, the cell sorting process is crucial to control the cell consistency. An additional descriptor, the k value, representing the decreasing rate of open circuit voltage during calendar test, should be involved in the cell sorting.
- electric vehicles /
- lithium-ion batteries /
- consistency analysis /
- electrochemical properties /
- statistical analysis

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參考文獻(13)

[1]	Miyatake S, Susuki Y, Hikihara T, et al. Discharge characteristics of multicell lithium-ion battery with nonuniform cells. J Power Sources, 2013, 241:736
[5]	Jannesari H, Emami M D, Ziegler C. Effect of electrolyte transport properties and variations in the morphological parameters on the variation of side reaction rate across the anode electrode and the aging of lithium ion batteries. J Power Sources, 2011, 196(22):9654
[6]	Kenney B, Darcovich K, MacNeil D D, et al. Modelling the impact of variations in electrode manufacturing on lithium-ion battery modules. J Power Sources, 2012, 213:391
[7]	Santhanagopalan S, White R E. Quantifying cell-to-cell variations in lithium ion batteries. Int J Electrochem, 2012, 2012:1
[8]	Dubarry M, Vuillaume N, Liaw B Y. Origins and accommodation of cell variations in Li-ion battery pack modeling. Int J Energy Res, 2010, 34(2):216
[9]	Dubarry M, Vuillaume N, Liaw B Y. From single cell model to battery pack simulation for Li-ion batteries. J Power Sources, 2009, 186(2):500
[10]	Chiu K C, Lin C H, Yeh S F, et al. Cycle life analysis of series connected lithium-ion batteries with temperature difference. J Power Sources, 2014, 263:75
[12]	Gogoana R, Pinson M B, Bazant M Z, et al. Internal resistance matching for parallel-connected lithium-ion cells and impacts on battery pack cycle life. J Power Sources, 2014, 252:8
[14]	Zhang J B, Huang J, Li Z, et al. Comparison and validation of methods for estimating heat generation rate of large-format lithium-ion batteries. J Therm Anal Calorim, 2014, 117(1):447
[15]	Zhang J B, Huang J, Chen L F, et al. Lithium-ion battery discharge behaviors at low temperatures and cell-to-cell uniformity. J Automot Saf Energy, 2014, 5(4):391
[16]	Huang J, Li Z, Zhang J B, et al. An analytical three-scale impedance model for porous electrode with agglomerates in lithiumion batteries. J Electrochem Soc, 2015, 162(4):A585
[17]	Huang J, Ge H, Li Z, et al. An agglomerate model for the impedance of secondary particle in lithium-ion battery electrode. J Electrochem Soc, 2014, 161(8):E3202
[18]	An F Q, Huang J, Wang C Y, et al. Cell sorting for parallel lithium-ion battery systems:rvaluation based on an electric circuit model. J Energy Storage, 2016, 6:195