Micro Short-Circuit Detector Including S/H Circuit for 1hr Retention and 52dB Comparator Composed of C-Axis Aligned Crystalline IGZO FETs for Li-Ion Battery Protection IC

📋 论文概要

本文提出一种用于锂离子电池微短路检测的电路，包含采样保持电路（可实现1小时保持）和52dB比较器，采用C轴取向晶体（CAAC-IGZO）技术，旨在提高电池安全性。

💡 主要创新点

• 提出包含采样保持电路的微短路检测器，实现1小时保持时间，适用于锂离子电池长期监测。
• 采用C轴取向晶体（CAAC-IGZO）构建52dB比较器，实现低功耗高精度检测。

🏷 关键词

📄 原文摘要

Toshihiko Takeuchi1, Kousei Nei1, Takako Seki1, Yuto Yakubo1, Kei Takahashi1, Shuji Fukai1, Takahiko Ishizu1, Munehiro Kozuma1, Ryota Tajima1, Takanori Matsuzaki1, Takayuki Ikeda1, Makoto Ikeda2, Shunpei Yamazaki1 Semiconductor Energy Laboratory, Kanagawa, Japan University of Tokyo, Tokyo, Japan 1 2 Li-ion batteries are primarily used as power sources in electronic devices and electric vehicles and offer substantial conveniences to consumers. However, fires have broken out likely due to micro short-circuit (also called internal or soft shortcircuit) in Li-ion batteries [1]. The micro short-circuit is a failure mode where Li metal first precipitates on a negative electrode and then reaches a positive electrode; eventually a short-circuit occurs between the negative and positive electrodes and the battery voltage slightly decreases. Repetitive occurrences of micro short-circuit will generate heat and lead to serious accidents with a fire or

👥 作者与机构

Hiroki Inoue1, Takeshi Aoki1, Fumika Akasawa1, Toshiki Hamada1,