技術論文とプレゼンテーション

Abstract: A 3.2V/10Ah LFP aluminum-laminated batteries are chosen as the target of the present study. A three-dimensional thermal simulation model is established based on finite element theory and proceeding from the internal heat generation of the battery[13]. The study illustrates a ... 詳細を見る

A 3D (three-dimensional) model of a vanadium redox flow battery (VRFB) with interdigitated flow channel design is proposed to study the distributions of fluid pressure, electric potential, current density and over-potential during operation. The performance of a VRFB with and without ... 詳細を見る

In general battery cells are charged/discharged using constant current or constant power expressed as C-Rates and P-Rates respectively. We are developing a single cell-level Li-Ion battery model in order to simulate the performance and the physicochemical phenomena under power ... 詳細を見る

Maritime transport contributes to about 3% of global greenhouse gas emissions. Proton exchange membrane (PEM) fuel cells are considered among the most promising clean technologies for decarbonizing the maritime sector. Some of the main benefits of PEM fuel cells include highly efficient ... 詳細を見る

The purpose of this work is to show whether an important difference in Lithium solid concentration and electrolyte concentration can be observed in a Lithium-ion battery model, when considering either the Butler-Volmer kinetics or the Tafel kinetics for describing the electrode kinetics ... 詳細を見る

本研究围绕锌溴液流电池的性能分析，利用 COMSOL Multiphysics 建立了电化学过程的多物理场模型。该模型结合了电极反应与离子迁移等关键环节，用于描述电池在充放电过程中的特性变化。通过仿真获得了电压、电流及浓度随时间的演化规律，并比较了不同运行条件下的性能差异。结果显示，模型能够合理反映电池的主要工作机制，为进一步的结构设计与参数优化提供了参考依据。 詳細を見る

简介: 为了便于终端用户更容易获取到电芯内部相关的电化学参数数据，本文通过逆向拆解的方法结合电化学-热耦合模型，采用有限元仿真分析和电化学参数优化试验的方式，验证了所获取参数的精确性，并通过参数辨识的方式考虑了bruggman系数，反应速率常数和固相扩散系数对动力电池充放电性能和温度的影响，将对标锂电池的电压、温度误差范围控制在3%以内。 詳細を見る

Dr. Bernardi is a Research Engineer with Ford Motor Company in Dearborn, MI. Her research focuses on the analysis and simulation of electrochemical energy-storage and conversion systems. In particular, Dr. Bernardi develops mathematical models that predict system behavior and identify ... 詳細を見る

为防止动力电芯在大电流充放电时发生热失控，一般会在正负极连接片上进行局部减薄及打孔，从而形成一个容易熔断的区域，我们称为熔断器。当大电流通过焊印流入连接片，由于截面减小在熔断器区域将会产生较大的局部电流，从而使结构温度急剧升高，造成材料熔断，从而形成断路来保护电芯。 这一过程可通过COMSOL中的电磁热耦合模型进行仿真，考虑部件的散热条件、熔点、熔化潜热，通过仿真的结构最高温度与材料的熔点温度与熔化潜热换算温度之和做对比，从而判断材料是否会发生熔断以及通电多长时间发生熔断。对标了实际熔断器的熔断时间之后可以对熔断器的几何结构进行优化，可以设计出更加合理的熔断器。 詳細を見る

The adoption of micro- and nanostructured electrodes is a promising technique to improve the performance of Li-ion battery, which increases the electrode surface area and improves the efficiency of ion exchange between the electrode and electrolyte. This performance improvement is ... 詳細を見る