NDLI: Two-Channel HTS SQUID Gradiometer System for Detection of Metallic Contaminants in Lithium-Ion Battery

Content Provider	IEEE Xplore Digital Library
Author	Tanaka, S. Akai, T. Kitamura, Y. Hatsukade, Y. Otani, T. Suzuki, S.
Copyright Year	2002
Abstract	A two-channel high-T_c SQUID gradiometer system for the detection of magnetic foreign matter in a lithium-ion battery was developed. Finding ultra-small metallic foreign particles can be a big issue for a manufacturer that produces commercial products such as lithium-ion batteries. If the presence of such particles is detected in its products, the manufacturer has to recall the products and thereby suffers a significant loss. Previously, we developed a detection system based on a single-channel SQUID gradiometer and horizontal magnetization. For practical use, we need to increase the detection width of the system by employing multiple sensors. In this paper, we present a two-channel high-T_c SQUID gradiometer system for the inspection of a lithium-ion battery. In order to increase the inspection width, two SQUID gradiometers were employed along with a specially designed cryostat. As a result, small iron particles with a diameter of less than 100 μm were detected by the system with a width of 22 mm. This is the first multi-channel high-T_c SQUID gradiometer system for detection of the contaminants in a lithium-ion battery.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	424
Ending Page	427
Page Count	4
File Size	1041648
File Format	PDF
ISSN	10518223
Volume Number	21
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	SQUIDs Magnetic shielding Magnetic noise Magnetic tunneling Iron Superconducting magnets Pollution measurement SQUID Lithium-ion battery magnetic detection metallic contaminant small particles
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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