Consultez les proceedings de la Conference COMSOL 2024
The temperature distributions inside two packs (in-line and staggered) made of large cylindrical lithium iron phosphate cells (of 18 Ah nominal capacity) are analysed in this paper during a 90 A constant discharge current. The analysis of the battery packs temperature distributions is ... En savoir plus
Emerging battery technologies are addressing applications of renewable and fossil fuel energy sources since they can store and release energy on demand. In recent years significant strides have been made in lithium battery technology. Lithium batteries are the primary sources of power in ... En savoir plus
为提高锂离子电池的能量密度，人们做出了许多努力，其中设计厚电极是一种很有前途的方法。传统上，在构建厚电极时会考虑动力学效应，例如降低迂回度以促进离子传输。这项工作创新性地研究了动力学和热力学对电极过程的耦合效应，并通过可视化电极过程对两者进行了竞争分析。结果表明，倾斜的平衡电位曲线有利于电极的均匀利用，但严重的动力学约束会使热力学调节失效。因此，改变电极的热力学特性以加强调节效果是一种很有前途的方法，而动力学约束则是限制电池容量释放的内在因素。深入的分析表明，确保离子和电子的混合控制可以显著缓解动力学反应的异质性。作为概念验证，我们构建了具有垂直通道的厚电极 ... En savoir plus
COMSOL Multiphysics® and the Batteries & Fuel Cells Module are used to create a pseudo 2D model of a Li-ion battery. A sensitivity analysis determines the most sensitive model parameters which are identified by microstructure analysis or optimized by nonlinear least-square regression ... En savoir plus
The LiNi0.8Mn0.1Co0.1O2/Silicon-carbon lithium ion battery is used in the plug-in electric vehicle due to its high specific energy. The mileage of electric vehicles can be improved by increasing the energy density of batteries, but the charging process becomes a more challenge issue ... En savoir plus
In this work, a mathematical model based on porous electrode theory was developed in COMSOL Multiphysics® simulation software to simulate discharge behavior of primary Zn/MnO2 alkaline batteries. The model integrates microscopic and macroscopic phenomena through incorporation of species ... En savoir plus
In recent years, fire and explosion accidents of mobile phones and electric vehicles are very common. If the heat generated by the battery cannot be dissipated in time will cause the battery temperature rise, or even thermal runaway. Therefore, it is necessary to decrease the heat ... En savoir plus
The all vanadium redox flow battery (VRFB) is a promising electrochemical energy storage technology with the potential to play an important role in future power grids [1]. While the common VRFB cell design is planar, a tubular cell design might display advantages as reduced sealing ... En savoir plus
Renewable energy sources such as solar and wind are intermittent in nature. Their effective utilization requires efficient, low cost energy storage systems to complement energy harnessing systems. The rechargeable flow batteries have emerged as the most suitable candidates due to their ... En savoir plus
Modeling of 3D AC electro-osmotic pumps is relevant to the creation of portable or implantable lab-on-a-chip devices for mm/s tunable fluid flows attainable with battery scale voltages. In this analysis using COMSOL Multiphysics we investigate the modeling challenges of computationally ... En savoir plus