技術情報とプレゼンテーション

At Leoni, we are not only working towards even more reliable, performant cables by simulating their electric, magnetic, mechanical as well as thermal properties but also bring our customer applications to our design board. Based, amongst others on multi-physical simulations, we prepare ... 詳細を見る

Abstract：The thermal behavior of lithium ion batteries could be investigated by efficient simulation method [1,2]. Here, we developed an electrochemical-lumped thermal analytical model to analyze the thermal response and heat breakdown of a pouch LiNi1/3Co1/3Mn1/3O2 battery (3Ah) under ... 詳細を見る

The performance of Li-ion battery is known to be dependent on the thickness direction distribution of binder volume fraction. The distribution is determined by drying process of electrode ink, which contains large active material and small binder. With the aim of predicting binder ... 詳細を見る

Two Anode Surface processes are examined : Formation of Solid Electrolyte Interphase (SEI) and heating due to Shuttle Current. During charging, higher order sulfur species are reduced at the anode surface, while they are concurrently being oxidized at the cathode. This leads to the ... 詳細を見る

环境污染问题日益严重，新能源汽车将逐渐成为汽车工业发展的新方向，而动力电池作为整个电动汽车的驱动核心，其安全性和使用寿命受到广泛关注。动力电池组在大倍率充放电时内部化学反应加剧，各单体电池温度急剧升高，电池单体之间的不一致性加剧，容易引发热失控等一系列安全事故。本工作采用COMSOL Multiphysics有限元软件对圆柱卷绕式锂离子电池建立3D电化学-热平均耦合有限元模型，将电化学模型与热模型结合分析电池的电化学特性以及热行为，最终建立一个安全可靠的热管理系统。 首先使用COMSOL软件的“电池与燃料电池模块”和“传热模块”这两个模块和“锂离子电池接口” ... 詳細を見る

All-solid-state batteries are among the next generation battery concepts that are currently being envisaged among both the international research community and industrial electronic vehicle producers. In addition to a long lifetime of more than several thousand cycles and intrinsic ... 詳細を見る

三元锂离子电池作为目前电动汽车的主流储能设备之一，其电化学性能与热性能引发诸多关注。锂离子电池的内部电化学特性和热特性对其性能有显著影响，但这些特性无法通过实验方法得到。本文基于多物理场耦合仿真软件COMSOL Multiphysics® 5.4，采用有限元方法，将电池电化学模型与热模型结合分析电池的电化学特性以及热行为。通过电化学模型和热模型原理，建立了30 Ah三元锂离子方形电池的三维电化学-三维热耦合模型。采用热传导模块建立了由电芯、正极和负极片组成的三维热模型，并覆盖电池硬壳，采用自由四面体法进行网格划分。基于该模型 ... 詳細を見る

Here we optimize the geometry: proof mass length Lm to total length L, thickness of the piezoelectric material (Tp) to total cantilever thickness (T) for obtaining the maximum stress distribution (Smax), output voltage (Vout) and power performance (Pout) of the unimorph Cantilever beam ... 詳細を見る

Modeling the heat generation and the heat transfer of the electrode of lithium-ion battery are introduced. There are several models, such as an homogeneous heating model and a model considering the current and reaction distribution of electrode. Generally, electrodes have large area and ... 詳細を見る

由于能源紧缺和环境污染的问题，电动汽车在近二十年来得到了快速迅猛的发展。动力电池作为电动汽车最为核心的部件之一，将影响到电动汽车未来的发展方向。如果能够对电池进行合理的建模与仿真，将会对电池的研究、设计和使用具有很好的指导意义。为了配合车用BMS算法开发，需要不同荷电态（SOC）、温度、脉冲时间下的内阻、极限电流/功率的MAP等数据。而MAP数据量过大，手动逐点仿真工作量太大，同时，极限电流/功率等需要查找，手动操作复杂。通过COMSOL与MATLAB联合仿真技术自动化获取数据，可以提高计算精度，减少人为测试量，减少开发成本。 ... 詳細を見る