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Sehen Sie sich die Kollektion für die COMSOL Conference 2024 an
Introduction: The drawbacks of most commercial “advanced battery” solutions are high price, danger, and low recyclability. The most cost efficient, environmental-friendly, and safest solutions so far is based on lead-acid electrochemistry, a proven technology for more than 150 years. Key ... Mehr lesen
Vibration-based Piezoelectric Energy harvesters convert ambient vibration energy into an applicable electrical charge for wireless sensors, IoT applications, and charging the battery, which is most important to range improvement of the Electric Vehicle. This study analyses different ... Mehr lesen
使用COMSOL Multiphysics计算了硅基锂离子电池在不同硅颗粒大小，电池放电倍率及固体电解质界面几何均匀性三个条件下SEI的稳定性。仿真结果表明，当硅颗粒半径从800 nm减小到600 nm和400 nm时，失效时间分别增加到原来失效时间的129%和165%。当结构缺陷深度比从0.6降低到0.4和0.2时，破坏时间分别增加到174%和237%。放电倍率方面，与0.1C相比，0.2C和0.3C下的失效时间分别延长至134%和239%。依此证明了减小硅颗粒粒径，人工设计结构均匀的SEI，采用较小倍率运行电池都是提升SEI稳定性的手段 Mehr lesen
Introduction: Recently, Li-ion battery is being widely used as power source for various applications from electronic gadgets to automotive industry. The performance and cycle life of Li-ion battery are becoming gradually important issues as the applications are shifting from small scale ... Mehr lesen
With a view to estimating electrical characteristics of a Polymer Li-ion Battery during specific charge and discharge conditions, a COMSOL Multiphysics® model has been developed that accounts for electrochemical phenomena inside the device. Cell model has been created using the Li-Ion ... Mehr lesen
为了实现锂电池电芯设计定向优化及评估析锂风险，如Fig.1所示，本工作利用COMSOL的“电池模块”中的“Lithium-ion battery”物理接口，基于Dolye等[1]的伪二维（P2D）模型、多孔电极及浓溶液理论，建立了固液相电荷守恒、固液相物质守恒及电荷转移守恒方程并求解，采用带初始化的瞬态求解器进行仿真。考虑到计算成本及场景需求，磷酸铁锂（LFP）电池电芯设计、极片缺陷和涂覆不同动力学负极材料案例分别构建为一维、二维和三维模型。为优化LFP的多孔电极的孔隙率、厚度设计，实现比能量和比功率最大化，基于COMSOL锂电池接口模拟了290多组设计实验 ... Mehr lesen
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 ... Mehr lesen
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 ... Mehr lesen
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 ... Mehr lesen
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 ... Mehr lesen