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Effect of preload forces on multidimensional signal dynamic behaviours for battery early safety warning

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Journal of Energy Chemistry 2024年第5期92卷 484-498页

作者： Kuijie Li Jiahua Li Xinlei Gao Yao lu depeng Wang Weixin Zhang Weixiong Wu Xuebing Han Yuan-cheng Cao Languang lu Jinyu Wen Shijie Cheng Minggao Ouyang School of Electrical and Electronic Engineering Huazhong University of Science and TechnologyWuhan 430074HubeiChina State Key Laboratory of Automotive Safety and Energy Tsinghua UniversityBeijing 100084China Energy and Electricity Research Center Jinan UniversityZhuhai 519070GuangdongChina Department of Mechanical Engineering Imperial College LondonLondon.SW7:2AZ.UK

Providing early safety warning for batteries in real-world applications is *** this study,comprehensive thermal abuse experiments are conducted to clarify the multidimensional signal evolution of battery failure under various preload *** time-sequence relationship among expansion force,voltage,and temperature during thermal abuse under five categorised stages is *** characteristic peaks are identified for the expansion force,which correspond to venting,internal short-circuiting,and thermal *** particular,an abnormal expansion force signal can be detected at temperatures as low as 42.4°C,followed by battery thermal runaway in approximately 6.5 ***,reducing the preload force can improve the effectiveness of the early-warning method via the expansion ***,reducing the preload force from 6000 to 1000 N prolongs the warning time(i.e.,227 to 398 s)before thermal runaway is *** on the results,a notable expansion force early-warning method is proposed that can successfully enable early safety warning approximately 375 s ahead of battery thermal runaway and effectively prevent failure propagation with module *** study provides a practical reference for the development of timely and accurate early-warning strategies as well as guidance for the design of safer battery systems.

关键词： Lithium-ion battery Thermal runaway Preload force Expansionforce Early warning Multidimensional signal

基于幂函数模型的高压开关柜温升预测与试验研究

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高压电器 2023年第10期59卷 96-103页

作者：兰剑韩冬冯英陆德鹏中国电力科学研究院有限公司北京100192 南瑞集团有限公司南京211106

文中针对高压开关温升预测缺少电流同温升关系模型这一难点,首次建立导电部位稳定温升τw与电流I的数学模型,得出τw与I的变化规律,通过高压开关柜系列电流下的温升试验,验证了该模型的合理性和准确性。阐述了电器发热基本理论中温升τ... 详细信息

文中针对高压开关温升预测缺少电流同温升关系模型这一难点,首次建立导电部位稳定温升τw与电流I的数学模型,得出τw与I的变化规律,通过高压开关柜系列电流下的温升试验,验证了该模型的合理性和准确性。阐述了电器发热基本理论中温升τ与时间t关系模型的推导过程,通过高压开关柜系列电流下的温升试验,进一步研究了该模型下不同试验时间段的拟合温升规律。在温升预测应用中,按文中τw与I的数学模型,求解形成稳定温升与电流标准曲线,作为温度在线监测的判断标准,从而实现故障提前预警。

关键词：高压开关柜温升计算模型曲线拟合温升预警

Experimental study of G-CSF alleviating graft-versus-host disease after mixed bone marrow transplantation in mice

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The Chinese-German Journal of Clinical Oncology 2007年第6期6卷 582-586页

作者： Yihong Huang Bing Du Kailin Xu depeng Li Qunxian lu Xupeng He Xiuying Pan Department of Hematology The Affiliated Hospital of Xuzhou Medical College Xuzhou 221002 China

Objective： How to reduce the incidence and severity of acute graft-versus-host disease （aGVHD） is a crucial step to improve the overall survival of allogeneic bone marrow transplantation （allo-BMT）. The low incidence of severe aGVHD observed in allogeneic peripheral blood stem cell transplantation （allo-PBSCT）, which may be related to modulating immune function of T lymphocytes by granulocyte colony-stimulating factor （G-CSF） primed donors. The study aimed to explore whether aGVHD could be alleviated by syngeneic bone marrow mixed with G-CSF-mobilized H-2 haploidentical marrow grafting. Methods： Female BALB/c mice and neonatal BALB/c mice were recipients and male （BALB/c × C57BL/6）F1（BCF1） mice were donor mice respectively. Donor mice were injected subcutaneously with G-CSF daily at 0.01 μg/g body weight or saline for 6 days, and splenocytes were harvested on day 6. Spleen index （SI） represented GVHD in neonatal mice after the intraperitoneal injection of mixed spleen cells. Lethally irradiated （^60Co, 8.5 Gy） adult mice were transplanted with a mixture of syngeneic plus G-CSF-mobilized （control diluents） H-2 haploidentical marrow cells. Survival time and survival rate of the recipients were observed after mixed marrow transplantation （MBMT）. GVHD was assessed by observing signs of weight loss, ruffled fur, diarrhea and histological change of skin, liver and small intestines. Enzyme-linked immunosorbent assay （ELISA） method was used to detect cytokines （IL-2, IL-4 and INF-γ）. Fluorescence-activated cell sorting （FACS） analysis was used to detect T cells phenotype. Results：（1） The neonatal mice subject to injection of 2：1 and 1：1 mixed spleen cells and H-2 haploidentical spleen cells all suffered from aGVHD. The severity of aGVHD in recipient mice receiving G-CSF-mobilized splenocytes was dramatically reduced. （2） The aGVHD signs and histological change were observed in most mice of 2：1 and 1：1 MBMT groups. However, the survival time of G-CSF-mobilized MBMT was long

关键词： granulocyte colony-stimulating factor graft-versus-host disease mixed bone marrow transplantation mouse

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基于Ansys的柱上开关温度场仿真分析

高压电器 2022年第12期58卷 49-54,60页

作者：陆德鹏韩冬黄靖宗清森李传强南瑞集团有限公司(国网电力科学研究有限公司) 南京211106

文中采用三维建模软件Solidworks及有限元软件Ansys对充入干燥空气的柱上开关进行了温度场仿真分析,研究不同接触电阻条件下柱上开关内温度分布规律。仿真结果表明,柱上开关接触点在正常接触电阻条件下温升均符合标准要求;真空灭弧室静... 详细信息

文中采用三维建模软件Solidworks及有限元软件Ansys对充入干燥空气的柱上开关进行了温度场仿真分析,研究不同接触电阻条件下柱上开关内温度分布规律。仿真结果表明,柱上开关接触点在正常接触电阻条件下温升均符合标准要求;真空灭弧室静触头与动触头接触点接触电阻增大1.56倍,隔离开关动触头与隔离开关静触头接触点接触电阻增大1.80倍,温升达到标准规定的限值。最后,进行了相应的温升试验,温度的仿真结果与试验结果相吻合。

关键词：柱上开关接触电阻温度场仿真

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吸水性对中压绝缘用尼龙66电气性能的影响

工程塑料应用 2015年第11期41卷 87-90页

作者：蔡凡一薛健周柏杰陆德鹏南京南瑞集团公司智能电气装备事业部南京211000

针对电力电网行业对中压用绝缘材料的性能要求,考察了吸水性对尼龙66(PA66)电气性能的影响情况。将PA66样品在不同条件下进行吸水处理后,分别对材料进行了介电强度、介电常数、介电损耗、电阻率等进行测试,获得了吸水率对PA66电气性能... 详细信息

针对电力电网行业对中压用绝缘材料的性能要求,考察了吸水性对尼龙66(PA66)电气性能的影响情况。将PA66样品在不同条件下进行吸水处理后,分别对材料进行了介电强度、介电常数、介电损耗、电阻率等进行测试,获得了吸水率对PA66电气性能影响的规律。结果表明,PA66的电气性能随着吸水率的增加而相应降低,但仍保持一定的绝缘能力,该结果将为PA等热塑性材料替代传统高性能环氧树脂绝缘材料、实现电力绝缘材料的环保化提供依据。

关键词：吸水性尼龙66 电气性能

Laser direct writing of Ga_(2)O_(3)/liquid metal-based flexible humidity sensors

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光电进展(英文) 2023年第7期6卷 30-39页

作者： Songya Cui Yuyao lu depeng Kong Huayu luo Liang Peng Geng Yang Huayong Yang Kaichen Xu State Key Laboratory of Fluid Power and Mechatronic Systems School of Mechanical EngineeringZhejiang UniversityHangzhou 310030China School of Information and Electrical Engineering Hangzhou City UniversityHangzhou 310015China

Flexible and wearable humidity sensors play a vital role in daily point-of-care diagnosis and noncontact human-machine ***,achieving a facile and high-speed fabrication approach to realizing flexible humidity sensors remains a *** this work,a wearable capacitive-type Ga_(2)O_(3)/liquid metal-based humidity sensor is demonstrated by a one-step laser direct writing *** to the photothermal effect of laser,the Ga_(2)O_(3)-wrapped liquid metal particles can be selectively sintered and converted from insulative to conductive traces with a resistivity of 0.19Ω·cm,while the untreated regions serve as active sensing layers in response to moisture *** 95%relative humidity,the humidity sensor displays a highly stable performance along with rapid response and recover *** these superior properties,the Ga_(2)O_(3)/liquid metal-based humidity sensor is able to monitor human respiration rate,as well as skin moisture of the palm under different physiological states for healthcare monitoring.

关键词： laser direct writing liquid metal humidity sensors flexible electronics wearable sensors

Ultralong excimer phosphorescence by the self-assembly and confinement of terpyridine derivatives in polymeric matrices

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聚集体(英文)

聚集体(英文) 2023年第4期4卷 230-238页

作者： Guangqiang Yin Wei lu Jianxiang Huang Rui Li depeng Liu Longqiang Li Ruhong Zhou Guifei Huo Tao Chen Key Laboratory of Marine Materials and Related Technologies Zhejiang Key Laboratory of Marine Materials and Protective TechnologiesNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingboChina School of Chemical Sciences University of Chinese Academy of SciencesBeijingChina Institute of Quantitative Biology College of Life SciencesZhejiang UniversityHangzhouChina Department of Chemistry National University of SingaporeSingaporeSingapore

Ultralong organic room temperature phosphorescence(RTP)is attracting increas-ing attention due to its fascinating optical phenomena and wide *** various RTP,excimer phosphorescence is of fundamental significance,but it remains a considerable challenge to achieveflexible,multicolor and large-area excimer RTP materials,which should greatly advance the understanding and devel-opment of organic light-emitting ***,we present ultralong excimer RTPfilms by the self-assembly and confinement of terpyridine(Tpy)derivatives in polymeric ***,the self-assembly of Tpy derivatives induces the formation of excimer complexes,thus immensely minimizing singlet-triplet split-ting energy(ΔEST)to promote the intersystem crossing ***,the confinement by multiple hydrogen bonding interactions as well as the compact aggregation of phosphors jointly suppresses the nonradiative transitions,leading to long-lived excimer RTP(τ543.9 ms,19,000-fold improvements over the pow-=der).On account of the outstanding afterglow performance and color-tunability of RTP materials,flexible and large-areafilms were fabricated for intelligent display,anticounterfeiting,and time-resolved information encryption.

关键词： aggregation excimer information encryption room temperature phosphorescence terpyridine

哈茨木霉拌种对冬小麦生长、土传病害及根际真菌群落的影响

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植物保护 2021年第5期47卷 35-40页

作者：扈进冬杨在东吴远征魏艳丽杨合同卢德鹏李纪顺齐鲁工业大学(山东省科学院)山东省科学院生态研究所山东省应用微生物重点实验室济南250103 山东鲁研农业良种有限公司济南250100 山东泰诺药业有限公司潍坊262200

为了明确哈茨木霉LTR-2拌种处理冬小麦的田间效果,为木霉拌种剂的推广应用提供依据,本试验于2016年-2018年连续3年,研究了哈茨木霉LTR-2拌种对小麦出苗率、幼苗生长、小麦纹枯病和茎基腐病发生情况和产量的影响,通过高通量测序和FUNGuil... 详细信息

为了明确哈茨木霉LTR-2拌种处理冬小麦的田间效果,为木霉拌种剂的推广应用提供依据,本试验于2016年-2018年连续3年,研究了哈茨木霉LTR-2拌种对小麦出苗率、幼苗生长、小麦纹枯病和茎基腐病发生情况和产量的影响,通过高通量测序和FUNGuild预测分析了木霉拌种对小麦根际土壤中真菌群落组成的影响。结果表明,哈茨木霉LTR-2拌种可以提高小麦的出苗率和冬前分蘖数;对小麦纹枯病的平均防效60%以上;对小麦茎基腐病的平均防效65%以上,优于6%戊唑醇悬浮种衣剂;与不拌种对照相比,哈茨木霉LTR-2拌种处理增产4.3%~6.34%,增产效果略高于6%戊唑醇悬浮种衣剂;木霉拌种可以降低小麦根际土壤中病原真菌的相对丰度,特别是土壤中镰孢属真菌的相对丰度。因此,哈茨木霉LTR-2可以作为化学拌种剂的绿色替代产品用于小麦生产。

关键词：哈茨木霉拌种冬小麦根际真菌群落

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陈化粮混合发酵生产燃料乙醇的效果研究

酿酒科技 2024年第2期 35-39页

作者：邓衍宏汪虎卢久灵汤德朋唐金超刘庆国宿州中粮生物化学有限公司安徽宿州234000 南京高新工大生物技术研究院有限公司江苏南京210032

为了评估陈化纯淀粉掺入陈化粮生产燃料乙醇的应用效果,通过摇瓶试验,以陈化水稻、陈小麦和淀粉为原料,研究酸性蛋白酶和接种量对于高浓度乙醇发酵的影响。结果显示,以陈化水稻和陈化小麦为基础培养基,添加一定比例的淀粉有利于酒精度... 详细信息

为了评估陈化纯淀粉掺入陈化粮生产燃料乙醇的应用效果,通过摇瓶试验,以陈化水稻、陈小麦和淀粉为原料,研究酸性蛋白酶和接种量对于高浓度乙醇发酵的影响。结果显示,以陈化水稻和陈化小麦为基础培养基,添加一定比例的淀粉有利于酒精度的提高,当添加量为40%~50%时,酒精度达到最高(13.4%vol~13.6%vol),总糖消耗较为彻底;采用高浓度淀粉醪液(总糖270 g/L左右)和酸性蛋白酶发酵可以有效提高发酵强度,尤其将接种量提升至40%左右时,最高酒精度可达15.1%vol,出酒率达52%以上。采用50 L发酵工艺验证,发现发酵指标与摇瓶一致,DDGS产品蛋白指标较佳。此研究结果表明将高浓度的淀粉以一定比例掺入到混合陈化粮醪液发酵是可行的,具有较强的工业化应用参考价值。

关键词：酿酒酵母乙醇陈化淀粉水稻小麦