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| 1 | Estimation Method of State-of-Charge For Lithium-ion Battery Used in Hybrid Electric Vehicles Based on Variable Structure Extended Kalman Filter显示文摘Since the main power source of hybrid electric vehicle(HEV) is supplied by the power battery,the predicted performance of power battery,especially the state-of-charge(SOC) estimation has attracted great attention in the area of HEV.However,the value of SOC estimation could not be greatly precise so that the running performance of HEV is greatly affected.A variable structure extended kalman filter(VSEKF)-based estimation method,which could be used to analyze the SOC of lithium-ion battery in the fixed driving condition,is presented.First,the general lower-order battery equivalent circuit model(GLM),which includes column accumulation model,open circuit voltage model and the SOC output model,is established,and the off-line and online model parameters are calculated with hybrid pulse power characteristics(HPPC) test data.Next,a VSEKF estimation method of SOC,which integrates the ampere-hour(Ah) integration method and the extended Kalman filter(EKF) method,is executed with different adaptive weighting coefficients,which are determined according to the different values of open-circuit voltage obtained in the corresponding charging or discharging processes.According to the experimental analysis,the faster convergence speed and more accurate simulating results could be obtained using the VSEKF method in the running performance of HEV.The error rate of SOC estimation with the VSEKF method is focused in the range of 5% to 10% comparing with the range of 20% to 30% using the EKF method and the Ah integration method.In Summary,the accuracy of the SOC estimation in the lithium-ion battery cell and the pack of lithium-ion battery system,which is obtained utilizing the VSEKF method has been significantly improved comparing with the Ah integration method and the EKF method.The VSEKF method utilizing in the SOC estimation in the lithium-ion pack of HEV can be widely used in practical driving conditions. | SUN Yong MA Zilin TANG Gongyou CHEN Zheng ZHANG Nong | 2016 | Chinese Journal of Mechanical Engineering2016，29，4： | 17 |
| 2 | The heterogeneity of islet autoantibodies and the progression of islet failure in type 1 diabetic patients显示文摘Type 1 diabetes mellitus is heterogeneous in many facets. The patients suffered from type 1 diabetes present several levels of islet function as well as variable number and type of islet-specific autoantibodies. This study was to investigate prevalence and heterogeneity of the islet autoantibodies and clinical phenotypes of type 1 diabetes mellitus; and also discussed the process of islet failure and its risk factors in Chinese type 1 diabetic patients. A total of 1,291 type 1 diabetic patients were enrolled in this study. Demographic information was collected. Laboratory tests including mixed-meal tolerance test, human leukocyte antigen alleles, hemoglobin A1 c, lipids, thyroid function and islet autoantibodies were conducted. The frequency of islet-specific autoantibody in newly diagnosed T1 DM patients(duration shorter than half year) was 73% in East China. According to binary logistic regressions, autoantibody positivity, longer duration and lower Body Mass Index were the risk factors of islet failure. As the disease developed, autoantibodies against glutamic acid decarboxylase declined as well as the other two autoantibodies against zinc transporter 8 and islet antigen 2. The decrease of autoantibodies was positively correlated with aggressive beta cell destruction. Autoantibodies can facilitate the identification of classic T1 DM from other subtypes and predict the progression of islet failure. As there were obvious heterogeneity in autoantibodies and clinical manifestation in different phenotypes of the disease, we should take more factors into consideration when identifying type 1 diabetes mellitus. | Jin Liu Lingling Bian Li Ji Yang Chen Heng Chen Yong Gu Bingqin Ma Wei Gu Xinyu Xu Yun Shi Jian Wang Dalong Zhu Zilin Sun Jianhua Ma Hui Jin Xing Shi Heng Miao Bing Xin Yan Zhu Zhenwen Zhang Ruifang Bu Lan Xu Guangde Shi Wei Tang Wei Li Dongmei Zhou Jun Liang Xingbo Cheng Bimin Shi Jixiang Dong Ji Hu Chen Fang Shao Zhong Weinan Yu Weiping Lu Chenguang Wu Li Qian Jiancheng Yu Jialin Gao Xiaoqiang Fei Qingqing Zhang Xueqin Wang Shiwei Cui Jinluo Cheng Ning Xu Guofeng Wang Guoqing Han Chunrong Xu Yun Xie Minmin An Wei Zhang Zhixiao Wang Yun Cai Qi Fu Yu Fu Shuai Zheng Fan Yang Qingfang Hu Hao Dai Yu Jin Zheng Zhang Kuanfeng Xu Yifan Li Jie Shen Hongwen Zhou Wei He Xuqin Zheng Xiao Han Liping Yu Jinxiong She Mei Zhang Tao Yang | 2016 | Science China(Life Sciences)2016，59，9： | 5 |
| 3 | Multi-objective parameter optimization for a single-shaft series-parallel plug-in hybrid electric bus using genetic algorithm显示文摘最近,插件混合电的公共汽车(PHEB ) 的单个柄的系列平行 powertrain 为驾驶周期由于它的可改变的操作模式,优秀燃料经济和强壮的适应性成为了最流行的 powertrains 之一。为在开发阶段与单个柄的系列平行 powertrain 设置 PHEB,当选择并且匹配主要部件参数时,不过,它仍然比另外的配置面对更大的挑战。由这个问题激发了,全面多目的优化策略与典型 powertrain 为 PHEB 基于基因算法(GA ) 被开发。就公共汽车线路的重覆性和整齐而言,首先,离线的数据处理和数学统计的方法被采用,到获得一个代表性的开车周期,它能很好反映真实世界的公共汽车线路的一般特征。然后,节俭的优化目的被定义,它是由生产关键部件和精力消费的费用组成,并且与动态优化目的结合了,多客观的优化功能被提出。同时, GA 算法被用来优化参数,为新奇系列平行 powertrain 的最佳的部件联合。最后,有原型的比较被执行沿着驾驶周期验证优化 powertrain 的表演。模拟结果显示建议全面多目的优化策略获得的 powertrain 部件的参数可能得到更好的燃料经济,同时保证 PHEB 的动态性能。与原版相对照,费用在 18% 衰退了。因此,策略将为 PHEB 制造商在参数选择上提供理论指导。 | CHEN Zheng ZHOU LiYan SUN Yong MA ZiLin HAN ZongQi | 2016 | Science China(Technological Sciences)2016，59，8： | 4 |
| 4 | Achieving exceptional activity and durability toward oxygen reduction based on a cobalt-free perovskite for solid oxide fuel cells显示文摘In response to the shortcomings of cobalt-rich cathodes, iron-based perovskite oxides appear as promising alternatives for solid oxide fuel cells (SOFCs). However, their inferior electrochemical performance at reduced temperatures (<700 ℃) becomes a major bottleneck for future progress. Here, a novel cobalt-free perovskite Ba_(0.75)Sr_(0.25)Fe_(0.875)Ga_(0.125)O_(3−δ) (BSFG) is developed as an efficient oxygen reduction electrode for SOFCs, featuring cubic-symmetry structure, large oxygen vacancy concentration and fast oxygen transport. Benefiting from these merits, cells incorporated with BSFG achieve exceptionally high electrochemical performance, as evidenced by a low polarization area-specific resistance of 0.074 Ω cm^(2) and a high peak power density of 1145 mW cm^(−2) at 600 ℃. Meanwhile, a robust short-term performance stability of BSFG cathode can be ascribed to the stable crystalline structure and favorable thermal expansion behavior. First-principles computations are also conducted to understanding the superior activity and durability toward oxygen reduction reaction. These pave the way for rationally developing highly active and robust cobalt-free perovskite-type cathode materials for reduced-temperature SOFCs. | Feifei Dong Zhenghui Gao Bingkai Zhang Lu Li Ziqi Kong Zilin Ma Meng Ni Zhan Lin | 2021 | Journal of Energy Chemistry2021，30，11： | 1 |
| 5 | Power distribution and coordinated control for a power split hybrid electric bus显示文摘 | WANG Feng ZHONG Hu MA Zilin | 2008 | Journal of electric Engineering & Technology2008，3，4： | 1 |
| 6 | Negligible Obstructions and Turán Exponents显示文摘We show that for every rational number r∈(1,2)of the form 2-a/b,where a,b∈N^(+)satisfy[b/a]^(3)≤a≤b/([b/a]+1)+1,there exists a graph Frsuch that the Turán number ex(n,F_(r))=Θ(n^(r)).Our result in particular generates infinitely many new Turán exponents.As a byproduct,we formulate a framework that is taking shape in recent work on the Bukh–Conlon conjecture. | Tao Jiang Zilin Jiang Jie Ma | 2022 | Annals of Applied Mathematics2022，38，3： | 0 |
| 7 | Magnesium incorporation activates perovskite cobaltites toward efficient and stable electrocatalytic oxygen evolution显示文摘Cobalt-rich perovskite oxides play a paramount role in catalyzing oxygen evolution reaction(OER)on account of their acceptable intrinsic activity but are still challenging due to the high costs and undesired stability.In response to the defects,herein,the Mg-incorporated perovskite cobaltite SrCo_(0.6)Fe_(0.3M)g_(0.1)O_(3-δ)(SCFM-0.1)is proposed as a novel earth-abundant and durable OER electrocatalyst.A well-consolidated cubic-symmetry structure and more active oxygen intermediates are enabled upon Mg substitution.Hence,the optimized SCFM-0.1 perovskite oxide achieves prominent OER electrocatalytic performance,that is,a low overpotential of only 320 mV at 10 mA cm^(-2),a small Tafel slope of 65 mV dec^(-1),as well as an outstanding durability within 20 h,substantially outperforming that of the pristine SrCo_(0.7)Fe_(0.3)O_(3-δ)and benchmark Ba_(0.5)Sr_(0.5)Co_(0.8)Fe_(0.2)O_(3-δ)and IrO_(2) catalysts.The strong pHdependent behavior associated with lattice oxygen activation mechanism for SCFM-0.1 catalyst is also confirmed.This work paves a unique avenue to develop cost-effective and robust perovskite cobaltites for efficient OER electrocatalysis. | Siyu Pan Zilin Ma Wenying Yang Biaokui Dongyang Huizhi Yang Shimin Lai Feifei Dong Xixian Yang Zhan Lin | 2023 | Materials Reports(Energy)2023，3，3： | 0 |
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