锂电池石墨负极涂层红外干燥特性实验
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摘要
对锂电池石墨负极涂层进行了红外干燥特性实验研究,探索了红外热源功率、辐射距离对极片涂层干燥特性及系统能耗的影响。实验结果表明:极片涂层的干燥分为升速、恒速及降速阶段;极片临界含水率与涂层干燥过程中厚度变化存在线性关系;在实验条件下辐射距离、热源功率对极片涂层干燥速率具有如下影响:功率越大、距离越小,干燥速率越大。基于上述实验结果,分析讨论了各自形成原因,并提出了系统的较优干燥工况参数:红外热源功率150 W,辐射距离155 mm。
The infrared drying characteristics of graphite anode coatings for lithium batteries were studied experimentally. The influence of infrared heat source power and radiation distance on drying characteristics of graphite anode coatings and energy consumption of the system were explored. The experimental results show that the drying process of the coatings can be divided into three stages: increasing speed,constant speed and decreasing speed,and there is a linear relationship between the critical moisture content of the coatings and the thickness change of the coatings during drying. Under the experimental conditions,the radiation distance and heat source power have the following effects on the drying rate of the coating: the greater the power and the smaller the distance,the greater the drying rate of the pole. Based on the above experimental results,the reasons for their formation are analyzed and discussed,and the optimum drying parameters of the system are put forward: infrared heat source power150 W,radiation distance 155 mm.
The infrared drying characteristics of graphite anode coatings for lithium batteries were studied experimentally. The influence of infrared heat source power and radiation distance on drying characteristics of graphite anode coatings and energy consumption of the system were explored. The experimental results show that the drying process of the coatings can be divided into three stages: increasing speed,constant speed and decreasing speed,and there is a linear relationship between the critical moisture content of the coatings and the thickness change of the coatings during drying. Under the experimental conditions,the radiation distance and heat source power have the following effects on the drying rate of the coating: the greater the power and the smaller the distance,the greater the drying rate of the pole. Based on the above experimental results,the reasons for their formation are analyzed and discussed,and the optimum drying parameters of the system are put forward: infrared heat source power150 W,radiation distance 155 mm.
引文
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2丁明,陈忠,苏建徽,等.可再生能源发电中的电池储能系统综述[J].电力系统自动化,2013,37(1):19-25Ding Ming,Chen Zhong,Su Jianhui,et al.An overview of battery energy storage systems for renewable energy generation[J].Automation of Electric Power Systems,2013,37(1):19-25
3贾蕗路,宋华美,王浩,等.储能系统中梯次利用动力电池容量优化配置研究进展[J].科学技术与工程,2018,18(26):153-159Jia Lulu,Song Huamei,Wang Hao,et al.Research progress of capacity optimization for second-use of electric vehicle batteries in energy storage System[J].Science Technology and Engineering,2018,18(26):153-159
4李泓,许晓雄.固态锂电池研发愿景和策略[J].储能科学与技术,2016,5(5):607-614Li Hong,Xu Xiaoxiong.Vision and strategies on solid lithium batteries[J].Energy Storage Science and Technology,2016,5(5):607-614
5刘霞平,王会才,孙强,等.石墨烯、3D石墨烯及其复合材料的研究进展[J].化工进展,2018(1):168-174Liu Xiaping,Wang Huicai,Sun Qiang,et al.Research progress of graphene and 3D graphene composites[J].Chemical Industry and Engineering Progress,2018(1):168-174
6李礼夫,张东羽.磷酸铁锂电池充电后静置的电压预测方法[J].科学技术与工程,2017,17(5):109-113Li Lifu,Zhang Dongyu.Voltage forecasting methods for still standing lithium iron phosphate battery after charging[J].Science Technology and Engineering,2017,17(5):109-113
7 Vettet J,Novak P,Wagner M R,et al.Ageing mechanisms in lithium-ion batteries[J].Journal of Power Sources,2005,147(1):269-281
8潘永康,王喜忠,刘相东.现代干燥技术[M].北京:化学工业出版社,2007:56-60Pan Yongkang,Wang Xizhong,Liu Xiangdong.Modern drying technology[M].Beijing:Chemical Industry Press,2007:56-60
9 Elmizadeh A,Shahedi M,Hamdami N.Quality assessment of electrohydrodynamic and hot-air drying of quince slice[J].Industrial Crops&Products,2018,116(C):35-40
10李徐佳,高殿荣,杨占兵,等.锂电池极片干燥箱风速场均匀特性研究[J].机械设计,2011,28(8):77-81Li Xujia,Gao Dianrong,Yang Zhanbing,et al.Study of uniform characteristics wind velocity field of dryer for lithium battery pole piece[J].Journal of Machine Design,2011,28(8):77-81
11 Ahmed S,Nelson P A,Gallagher K G,et al.Energy impact of cathode drying and solvent recovery during lithium-ion battery manufacturing[J].Journal of Power Source,2016,322:169-178
12李徐佳,高殿荣,邸立明,等.基于流场数值模拟的锂电池极片干燥箱结构改进[J].中国机械工程,2010,21(18):2183-2187Li Xujia,Gao Dianrong,Di Liming,et al.Structure modification of dryer for lithium battery film based on flow field numerical simulation[J].China Mechanical Engineering,2010,21(18):2183-2187
13 Marco P D,Frigo S,GABBRIELLI R,et al.Mathematical modelling and energy performance assessment of air impingement drying systems for the production of tissue paper[J].Energy,2016,114:201-213
14杨波,钱志良.红外干燥技术的发展现状及其在导光板干燥中的应用前景[J].智库时代,2017(7):172-173Yang Bo,Qian Zhiqiang.The development of infrared drying technology and its application prospect in light plate drying[J].Think Tank Era,2017(7):172-173
15 Onwude D I,Hashim N,Chen G.Recent advances of novel thermal combined hot air drying of agricultural crops[J].Trends in Food Science&Technology,2016,57(A):132-145
16 Glouannec P,Salagnac P,Guezenoc H,et al.Experimental study of infrared-convective drying of hydrous ferrous sulphate[J],Powder Technology,2008,187(3):280-288