植入式电位感应隔板可实现智能电池内部状态监控和安全警报

IF 15 1区 工程技术 Q1 ENERGY & FUELS
Anyu Su , Shuoyuan Mao , Languang Lu , Xuebing Han , Minggao Ouyang
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引用次数: 0

摘要

目前的电池管理系统仅限于测试外部特性,而电池的内部状态则是一个 "黑盒子"。评估电池内部状态需要先进的表征技术和电池传感技术。然而,由于其寿命短、灵敏度低、侵入性强和成本高昂,这些技术在实际应用和商业化方面面临着挑战。在这里,我们提出了一种植入电位传感器的智能电池,用于原位测量阳极电位,从而识别严重的副反应和异常的锂电镀行为。具体来说,电位传感材料直接集成到电池隔膜中,隔膜可提供可靠的电位参考,并充当传感终端。隔膜的多孔结构有利于锂离子传输,同时通过无损植入实现高精度监测。此外,电位传感隔膜还能在早期检测出电池中存在的或潜在的缺陷,而这些缺陷很难从电池的外部特征中及时发现。此外,我们还开发了一种多点电位传感器监测系统,不仅能监测阳极电位的分布,还能精确定位电池缺陷的位置。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Implanted potential sensing separator enables smart battery internal state monitor and safety alert

Implanted potential sensing separator enables smart battery internal state monitor and safety alert

The current battery management system is limited to testing external characteristics, leaving the battery's internal status as a “black box”. Advanced characterization techniques and battery sensing technologies are needed to assess the battery's internal state. However, due to their short lifespan, low sensitivity, invasive nature, and high cost, these technologies face challenges in practical applications and commercialization. Here, we propose a smart battery implanted with a potential sensor for in-situ measurement of anode potential, enabling the recognition of severe side reactions and abnormal Li plating behavior. Specifically, the potential sensing material is directly integrated into the battery separator, which provides a reliable potential reference and serves as a sensing terminal. The porous structure of the separator facilitates lithium-ion transport while simultaneously enabling high-accuracy monitoring with non-destructive implantation. Additionally, the potential sensing separator can detect pre-existing or latent defects in the battery at an early stage, which are difficult to discern from the battery's external characteristics in a timely manner. Furthermore, we have developed a multi-point potential sensor monitoring system that can not only monitor the distribution of anode potential but also pinpoint the location of battery defects.

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来源期刊
Etransportation
Etransportation Engineering-Automotive Engineering
CiteScore
19.80
自引率
12.60%
发文量
57
审稿时长
39 days
期刊介绍: eTransportation is a scholarly journal that aims to advance knowledge in the field of electric transportation. It focuses on all modes of transportation that utilize electricity as their primary source of energy, including electric vehicles, trains, ships, and aircraft. The journal covers all stages of research, development, and testing of new technologies, systems, and devices related to electrical transportation. The journal welcomes the use of simulation and analysis tools at the system, transport, or device level. Its primary emphasis is on the study of the electrical and electronic aspects of transportation systems. However, it also considers research on mechanical parts or subsystems of vehicles if there is a clear interaction with electrical or electronic equipment. Please note that this journal excludes other aspects such as sociological, political, regulatory, or environmental factors from its scope.
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