通过对不同荷电态及不同搁置温度下单体电池的循环寿命测试,发现不同温度及荷电态对锂离子电池循环寿命影响很大。低荷电态下,温度对电池循环性能影响较小,但是在满荷电态下,电池在高温下的循环性能明显差于常温。20℃下,随着荷电态的增加,电池循环寿命依次增加。55℃下,随着荷电态的增加,电池循环寿命衰减严重。以此为依据,可以根据不同情况采取不同的搁置方法,从而提高锂离子电池的循环寿命。
The cycle life of lithium-ion batteries was studied under different states-of-charge（SOC） at 20℃ and 55℃,respectively.It has been found that the shelving temperature and the SOC exert strong effects on the cycle life of lithium-ion batteries.At a partial SOC,the influence of temperature on the cycle performance of lithium-ion batteries is small.However,in full state-of-charge,the cycle life at high temperature is deteriorated with increasing the cycle number.At 20℃,the cycle performance of lithium-ion batteries is improved with increasing the SOC,but decreased severely at 55℃.Based on these results,the cycle life of lithium-ion batteries can be improved through modulating the SOC at different conditions.
参考文献
| [1] | J.-M. Taraseon;M. Armand .Issues and challenges facing rechargeablelithium batteries[J].Nature,2001,414(15):359-367. |
| [2] | Arico AS;Bruce P;Scrosati B;Tarascon JM;Van Schalkwijk W .Nanostructured materials for advanced energy conversion and storage devices[J].Nature materials,2005(5):366-377. |
| [3] | 俞琛捷,莫祥银,康彩荣,倪聪,丁毅.锂离子电池磷酸铁锂正极材料的制备及改性研究进展[J].材料科学与工程学报,2011(03):468-470,454. |
| [4] | Y. Uno;T. Tsujikawa;T. Hirai .Electrochemical propertiesof helical carbon nanomaterials formed on LiCoO2 by chemical vapor deposition[J].Journal of Power Sources,2010,195(01):354-357. |
| [5] | P. Shen;D. Jia;Y. Huang;L.Liu,Z.Guo .LiMn2O4 cathode materials synthesized by the cellulose - citric acid method for lithium ion batteries[J].Journal of Power Sources,2006,158(01):608-613. |
| [6] | G. X. Wang;S. Zhong;D. H. Bradhurst et al.[J].Journal of Power Sources,1998,76(02):141-146. |
| [7] | F. Tanguy;J. Gaubicher;D. Guyomard .Capacity fading on cycling nano size grains of Li_(1.1)V_3O_8, electrochemical investigation[J].Electrochimica Acta,2010(12):3979-3986. |
| [8] | Padhi AK.;Goodenough JB.;Nanjundaswamy KS. .PHOSPHO-OLIVINES AS POSITIVE-ELECTRODE MATERIALS FOR RECHARGEABLE LITHIUM BATTERIES[J].Journal of the Electrochemical Society,1997(4):1188-1194. |
| [9] | SHIN-ICHI NISHIMURA;GENKI KOBAYASHI;KENJI OHOYAMA .Experimental visualization of lithium diffusion in Li_xFePO4[J].Nature materials,2008(9):707-711. |
| [10] | Daiwon Choi;Prashant N. Kumta .Surfactant based sol-gel approach to nanostructured LiFePO_4 for high rate Li-ion batteries[J].Journal of Power Sources,2007(2):1064-1069. |
| [11] | 吴国良.锂离子电池荷电贮存性能的研究[J].电池,2007(04):275-277. |
| [12] | 魏学哲,徐玮,沈丹.锂离子电池内阻辨识及其在寿命估计中的应用[J].电源技术,2009(03):217-220. |
| [13] | 林成涛,李腾,田光宇,陈全世.电动汽车用锂离子动力电池的寿命试验[J].电池,2010(01):23-26. |
| [14] | Jonghoon Kim;Seongjun Lee;B.H. Cho .Discrimination of Li-ion batteries based on Hamming network using discharging-charging voltage pattern recognition for improved state-of-charge estimation[J].Journal of Power Sources,2011(4):2227-2240. |
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