Articles techniques et présentations

During the last three decades, lithium-ion batteries have become the choice of power source for most portable electronic devices. During a discharge process, intercalated lithium, which is initially stored in the anode, de-intercalates, diffuses out in the electrolyte, reaches the ... En savoir plus

The push to electrify vehicles has highlighted a critical need for advanced thermal management systems in electric vehicle (EV) battery packs. Maintaining a stable temperature for these batteries is crucial for their efficiency, lifespan, and safety, as they are highly sensitive to ... En savoir plus

Thermal runaway (TR) is a critical safety hazard in lithium-ion battery systems, particularly in large energy storage installations and electric transportation applications. TR occurs when the cell temperature exceeds a certain threshold value, triggering a series of exothermic ... En savoir plus

Batteries are considered a key technology for the transition to climate neutrality. There is an urgent need to improve the resource efficiency of existing technologies while transitioning to next-generation battery systems. A mechanistic battery model is a powerful tool to accelerate ... En savoir plus

Automotive battery development requires continuous improvements to be more time- and cost-efficient. Limited availability of prototype cells at various stages of design or of differing chemistry, age and health is a major challenge. A highly integrated model-based developing process can ... En savoir plus

The scale up of electrical energy storage is one of the great technological challenges of our time as the world must quickly transform its energy infrastructure away from fossil fuels. Companies striving to commercialize new battery technologies must solve numerous electrochemical, ... En savoir plus

A Digital Twin Approach for Battery Management Systems for LiFePO4 Batteries Roger Painter 1,5, Ranganathan Parthasarathy 1, Lin Li 1, Irucka Embry 2, Lonnie Sharpe 3 and S. Keith Hargrove 4 1 Department of Civil Engineering, Tennessee State University, Nashville, TN 37209, USA; ... En savoir plus

Lithium-ion batteries are leading the electrification transition, particularly within the transport sector. However, numerous challenges still remain, with fast charging emerging as a major concern. To speed up research, physics-based models are frequently employed alongside experimental ... En savoir plus

Liquid cooling is the most popular battery thermal management system (BTMS) at present, while suffers from high energy consumption and high temperature difference between upstream and downstream. Herein, we first use a reciprocating liquid flow-based BTMS (RLF-BTMS) for cylindrical ... En savoir plus

锂离子电池的安全长寿命运行离不开高效的热管理系统，其中浸没式液冷热管理系统的散热功率较大同时能实现电池组较高的温度一致性，是目前极具发展潜力的热管理方式。本研究利用COMSOL Multiphysics软件中的固体与流体传热模块和电池中的集总电池模块，并结合非等温流动和电化学热两个热多物理场，建立了浸没式液冷热管理系统的仿真模型，综合比较了三种浸没式液冷方式的散热能力，进一步通过COMSOL中的参数化扫描等功能研究探究了出入口位置、电池间距、冷却液热特性对浸没式液冷散热特性的影响。结果分析中采用了COMSOL丰富的后处理功能 ... En savoir plus