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Sensors 2011, 11(10), 9942-9950; doi:10.3390/s111009942
Article

In Situ Monitoring of Temperature inside Lithium-Ion Batteries by Flexible Micro Temperature Sensors

* ,
,
 and
Department of Mechanical Engineering, Yuan Ze Fuel Cell Center, Yuan Ze University, 135 Yuan-Tung Road, Chung-Li, Taoyuan 32003, Taiwan
* Author to whom correspondence should be addressed.
Received: 29 August 2011 / Revised: 18 October 2011 / Accepted: 18 October 2011 / Published: 21 October 2011
(This article belongs to the Section Physical Sensors)
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Abstract

Lithium-ion secondary batteries are commonly used in electric vehicles, smart phones, personal digital assistants (PDA), notebooks and electric cars. These lithium-ion secondary batteries must charge and discharge rapidly, causing the interior temperature to rise quickly, raising a safety issue. Over-charging results in an unstable voltage and current, causing potential safety problems, such as thermal runaways and explosions. Thus, a micro flexible temperature sensor for the in in-situ monitoring of temperature inside a lithium-ion secondary battery must be developed. In this work, flexible micro temperature sensors were integrated into a lithium-ion secondary battery using the micro-electro-mechanical systems (MEMS) process for monitoring temperature in situ.
Keywords: MEMS; micro temperature sensor; lithium-ion secondary battery; in situ monitoring MEMS; micro temperature sensor; lithium-ion secondary battery; in situ monitoring
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Lee, C.-Y.; Lee, S.-J.; Tang, M.-S.; Chen, P.-C. In Situ Monitoring of Temperature inside Lithium-Ion Batteries by Flexible Micro Temperature Sensors. Sensors 2011, 11, 9942-9950.

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