复合材料夹层结构电池冲击后弯曲性能研究

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-04-08 DOI:10.1016/j.tws.2025.113240

Xiaochen Wang , Yuxiang Shang , Zhenkun Lei , Yingming Wang , Minghui Lu , Sheng Feng , Ruixiang Bai , Cheng Yan

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引用次数: 0

摘要

将锂离子电池嵌入复合材料中，将复合材料的机械承载能力与电池的储能和供电能力相结合，形成多功能结构。这有效地减少了现有电池的质量，扩大了可用空间，为下一代能源传输提供了理想的解决方案。保证这种结构的机械承载能力和冲击后的电化学稳定性对其性能至关重要。研究了锂离子电池嵌入复合材料夹层结构的冲击响应和剩余性能。分析了低速碰撞和碰撞后弯曲过程中的力电耦合行为。实验结果表明，嵌入式锂电池在冲击过程中可能发生微短路，但在瞬态冲击和BAI过程中仍能保持良好的储能能力。充放电循环试验表明，随着冲击能量的增加，电池容量损伤增加，但弯曲过程中电化学性能保持稳定。开发的数值模拟框架验证了不同冲击能量下的结构损伤机理，揭示了嵌入电池的复合材料结构的动态响应和能量吸收特性。研究表明，嵌入电池的复合材料夹层结构具有优异的抗冲击性能和冲击后储能能力，为新能源汽车提供理论和实验支持。

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Study on bending-after-impact performance of composite sandwich structural batteries

Embedding lithium-ion batteries into composites creates a multifunctional structure that integrates the mechanical load-bearing capacity of composites with the energy storage and power supply of battery. Which effectively reduces the mass of currently available batteries and expands the usable space, presenting an ideal solution for next-generation energy transmission. Ensuring the mechanical load-bearing capacity and electrochemical stability of this structure after impact is crucial for its performance. This study investigates the impact response and residual performance of lithium-ion batteries embedded in composite sandwich structures. The force-electrical coupling behaviors during low-speed impact and bending-after-impact (BAI) were analyzed. Experimental results indicate that micro-short circuits may occur during the impact process of embedded lithium batteries, but they maintain good energy storage capacity during transient impact and BAI. Charge-discharge cycle tests show that with increasing impact energy, battery capacity damage increases, yet stable electrochemical performance is retained during bending. A developed numerical simulation framework validated the structural damage mechanisms under different impact energies, revealing the dynamic response and energy absorption characteristics of composite structures with embedded batteries. This study demonstrates that the composite sandwich structures with embedded batteries exhibit excellent impact resistance and post-impact energy storage capabilities, offering both theoretical and experimental support in new energy vehicles.

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来源期刊

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.