检索结果-南通市图书馆

Science China(Technological Sciences) 2021年第11期64卷 2373-2388页

作者： li yiding WANG WenWei liN Cheng ZUO FengHao National Engineering Laboratory for Electric Vehicles Beijing Institute of TechnologyBeijing 100081China Shenzhen Automotive Research Institute Beijing Institute of TechnologyShenzhen 518118China

The safety of lithium-ion batteries under mechanical abuse has become one of the major obstacles affecting the development of electric vehicles. In this paper, the lithium-ion battery safety model under mechanical abuse conditions is proposed by the Back Propagation Artificial Neural Network(BP-ANN) optimized by the Genetic Algorithm(GA). By experimental and simulation results, the proposed method can effectively predict battery mechanical properties. The corresponding correlation coefficient is greater than 0.99, the failure warning model has more safety margin, and the average security margin is greater than 29%. The multi-source warning weight shows that the mechanical soft short-circuit has the greatest warning margin, followed by that of the soft short-circuit of the electrical signal. The thermal soft short-circuit has the lowest warning margin because of the low thermal conductivity. The qualitative simulation results of the battery module reveal that, when electric vehicles are subjected to mechanical abuse conditions, the rapid reduction in the state-of-charge(SOC) of the rear batteries can effectively increase the reliability of the battery module. The proposed safety model is important to protect the safety and stability of lithium-ion batteries, which is conducive to promoting new energy vehicles and protecting the environment.

关键词： lithium-ion battery GA-BP model failure warning warning weight failure protection

Mass‑Spring‑Damping Theory Based Equivalent Mechanical Model for Cylindrical lithium‑ion Batteries under Mechanical Abuse

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Mechanical Engineering 2020年第2期33卷 161-174页

作者： Wenwei Wang yiding li Cheng lin Sheng Yang National Engineering Laboratory for Electric Vehicles Beijing Institute of TechnologyBeijing 100081China Collaborative Innovation Center of Electric Vehicles in Beijing Beijing Institute of TechnologyBeijing 100081China

An equivalent mechanical model with the equivalent physical meaning of mass-spring-damping is proposed for cylindrical lithium-ion batteries through experiments and *** equivalent mechanical model of a cylindrical lithium-ion battery consists of a spring-damping parallel ***,a spring-damping parallel unit connecting a damping unit in series is selected to construct the constitutive characteristics of the battery under mechanical *** results show that the equivalent mechanical model can more effectively describe the mechanical properties of the batteries than most cubic fitting models,of which the average relative error of the equivalent mechanical model under different states-of-charge is less than 6.75%.Combined with the proposed equivalent mechanical model,the failure process of the batteries was simulated and analyzed using LS-Dyna and *** rigid rod tests,failure occurred at the core and bottom of the batteries;under hemispherical punch tests,failure occurred at the core and top,consistent with the experimental *** average prediction error for the failure displacement under different abuse conditions is less than 4%in the *** equivalent mechanical model requires only a few parameters and can be recognized *** the future,the model can be used in safety warning devices based on mechanical penetration.

关键词： Cylindrical lithium-ion battery Mass-spring-damping theory Equivalent mechanical model Mechanical abuse condition Failure analysis

Selective Targeting of Perirhinal Cortex Projection to Hippocampal CA1 Interneurons

在线全文

学校读者我要写书评

暂无评论

Neuroscience Bulletin 2019年第4期35卷 763-765页

作者： Xiang li yiding li Junhui Zhang Xiaohui Zhang State Key Laboratory of Cognitive Neuroscience & Learning IDG/McGovern Institute for Brain Research Beijing Normal University Beijing 100875 China Department of Joint Surgery The 6th Hospital of Ningbo Ningbo 31500 China

Dear Editor,The perirhinal cortex (PER) is conceptually important in the recognition memory, especially in familiarity discrimination, whereas the hippocampus is important for association and recollection [1]. This no... 详细信息

关键词： Selective Targeting Perirhinal Cortex CA1 Interneurons

Functional Optical Fiber Sensors Detecting Imperceptible Physical/Chemical Changes for Smart Batteries

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2024年第8期16卷 268-308页

作者： yiding li li Wang Youzhi Song Wenwei Wang Cheng lin Xiangming He Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084People’s Republic of China National Engineering Research Center of Electric Vehicles Beijing Institute of Technology(BIT)Beijing 100081People’s Republic of China Shenzhen Automotive Research Institute of BIT(Shenzhen Research Institute of National Engineering Research Center of Electric Vehicles) Shenzhen 518118People’s Republic of China

The battery technology progress has been a contradictory process in which performance improvement and hidden risks *** the battery is still a“black box”,thus requiring a deep understanding of its internal *** battery should“sense its internal physical/chemical conditions”,which puts strict requirements on embedded sensing *** paper summarizes the application of advanced optical fiber sensors in lithium-ion batteries and energy storage technologies that may be mass deployed,focuses on the insights of advanced optical fiber sensors into the processes of one-dimensional nano-micro-level battery material structural phase transition,electrolyte degradation,electrode-electrolyte interface dynamics to three-dimensional macro-safety *** paper contributes to understanding how to use optical fiber sensors to achieve“real”and“embedded”*** the inherent advantages of the advanced optical fiber sensor,it helps clarify the battery internal state and reaction mechanism,aiding in the establishment of more detailed *** advancements can promote the development of smart batteries,with significant importance lying in essentially promoting the improvement of system ***,with the help of smart batteries in the future,the importance of consistency can be weakened or even *** application of advanced optical fiber sensors helps comprehensively improve the battery quality,reliability,and life.

关键词： Smart battery Advanced embedded optical fiber sensor Battery internal physical/chemical state Quality-reliability-life characteristic

The Correlations between the lightning Density Distribution of Sichuan Province and the Seismic Area

在线全文

学校读者我要写书评

暂无评论

International Journal of Geosciences 2013年第2期4卷 380-386页

作者： Xiaobing Jin Zhongming Chen Qiming Ma yiding li Junwei Pu CMA Meteorological Observation Center China Meteorological Administration Beijing China Sichuan Meteorological Administration Chengdu China Guizhou Meteorological Administration Guiyang China lightning Protection Center Sichuan Meteorological Administration Chengdu China

We here report our observations of the intense lightning events during ~15:00, 23 September to ~12:00, 24 September 2008 along the fault of Wenchuan-Beichuan counties in Sichuan Province, China where a 8.0 magnitude earthquake strike on May 12th, 2008. This intense lightning period had the highest density in all available the lightning monitoring data of Sichuan. The altered lightning pattern is unlikely to be a coincidence. We also found that the spatial-temporal characteristic of lightning in Sichuan has changed after the earthquake. We studied the correlations and analyze the data between lightning and earthquake in order to understand the seemingly unrelated events.

关键词： Seismic Area lightning Density Correlations Distribution

“一带一路”与生物遗传资源获取和惠益分享:关联、路径与策略

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

生物多样性 2019年第12期27卷 1386-1392页

作者：李一丁贵州大学法学院贵阳550025

"一带一路"倡议的提出具有重要的时代意义和深远的历史影响。"一带一路"的持续推进和贯彻落实也使得其发展面向和具体内容日趋多元和丰富。生物遗传资源获取和惠益分享已成为全球生物多样性领域长期、持续关注的焦点领域和热门话题,其... 详细信息

"一带一路"倡议的提出具有重要的时代意义和深远的历史影响。"一带一路"的持续推进和贯彻落实也使得其发展面向和具体内容日趋多元和丰富。生物遗传资源获取和惠益分享已成为全球生物多样性领域长期、持续关注的焦点领域和热门话题,其在理念、目标、方式与主体等方面与"一带一路"高度契合。对于中国而言,在"一带一路"背景下开展生物遗传资源获取和惠益分享应选择双边路径为主、多边路径为辅的方案。未来"一带一路"倡议下中国与沿线国家开展生物遗传资源获取和惠益分享可能的策略包括:提出地区或区域性生物遗传资源获取和惠益分享行动规划,实施地区或区域性生物遗传资源获取和惠益分享行动倡议,持续推动国内生物遗传资源获取管制法律和监管体制创设,开展生物遗传资源获取和惠益分享能力建设项目。

关键词： “一带一路” 生物遗传资源获取和惠益分享关联、路径与策略

A New Aim-Points-Choosing Model for Attacking Mobile Missile Systems

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Engineering and Electronics 1999年第4期10卷 67-71页

作者： Wu Faping Bi yiding & li Jingwen(Xi’an Research Inst. of Hi-Tech., HongQing Town, 710025, P. R. China) Xi'an Research Inst. of Hi-Tech. Hong Qing Town 710025. P. R. China

A new aim-points-choosing model for attacking mobile missile systems in sector region is presented and realized in this paper. The model has the generality for attacking mobile target andis also useful for making an o... 详细信息

关键词： Mobile missile Mathematical model Optimization

《昆明—蒙特利尔全球生物多样性框架》:要义、焦点与本土规范回应

在线全文

学校读者我要写书评

暂无评论

太平洋学报 2023年第8期31卷 88-100页

作者：李一丁贵州大学贵州贵阳550025

广受瞩目的生物多样性公约第十五次缔约方大会如期通过《昆明—蒙特利尔全球生物多样性框架》。作为未来指引、规导全球生物多样性治理的纲领性和标志性文件,该框架属国际软法但具备较高约束力、较强执行力和较大影响力,并确证“公约+... 详细信息

广受瞩目的生物多样性公约第十五次缔约方大会如期通过《昆明—蒙特利尔全球生物多样性框架》。作为未来指引、规导全球生物多样性治理的纲领性和标志性文件,该框架属国际软法但具备较高约束力、较强执行力和较大影响力,并确证“公约+议定书+框架”生物多样性新型国际法体例。《昆明—蒙特利尔全球生物多样性框架》为“一主五配”、平行并列与交织共存的样貌,不仅于结构与要素方面出现变化,还在治理的理念、一揽子形式、基线制逻辑和高相关内容等方面呈现创新,其焦点集中于配套决定,对监测框架、履约资金和能力建设等问题施予关注。《昆明—蒙特利尔全球生物多样性框架》施行需要规划、政策、法律等助力《中国生物多样性保护战略与行动计划》修订更新、具体行动目标履践和特定议题规范准备以实现本土规范回应。

关键词：《昆明—蒙特利尔全球生物多样性框架》生物多样性公约全球生物多样性治理本土规范回应

维普期刊数据库博看期刊

全球微生物遗传资源获取规则动态、中国问题与完善建议

在线全文

学校读者我要写书评

暂无评论

中国科技论坛 2019年第11期 21-29页

作者：李一丁贵州大学法学院

现今,全球微生物遗传资源培育保藏机构之间的"联网"状态及"共享"微生物遗传资源出现的技术、制度基础为全球微生物遗传资源获取和惠益分享了技术标准、条件及行为规则,其文本载体主要为示范协议、行为准则和实践手册。这既是全球各微生... 详细信息

现今,全球微生物遗传资源培育保藏机构之间的"联网"状态及"共享"微生物遗传资源出现的技术、制度基础为全球微生物遗传资源获取和惠益分享了技术标准、条件及行为规则,其文本载体主要为示范协议、行为准则和实践手册。这既是全球各微生物遗传资源培育保藏机构长期以来关于获取和惠益分享活动的智慧成果总结,又是对《生物多样性公约》《名古屋议定书》等国际法律文件规定所进行的行业实践。我国微生物遗传资源获取管制领域呈现"行业管理体系领先于行政监督管理体制""行业获取实践领先于官方政策、法律制定"等特征。这些特征也从侧面反映出我国面临微生物遗传资源行政监督管理体制疏失,微生物遗传资源获取管制专项政策、法律缺位及行业获取规范缺陷等问题。结合示范协议、行为准则和实践手册现状分析,本文认为我国既要注重微生物遗传资源行政监督管理体制、法制建设等外部体制、规范创设构建,还要重视微生物遗传资源培育保藏机构行业获取规范等内部规则完善。

关键词：微生物遗传资源获取规则获取和惠益分享《名古屋议定书》

Acoustic Parameter Measurement for Low-frequency Ultrasound

在线全文

学校读者我要写书评

暂无评论

Acoustic Parameter Measurement for Low-frequency Ultrasound