System and method for detecting health state acoustic emission of lithium ion battery

A lithium-ion battery and acoustic emission detection technology, which is applied in the direction of material analysis, measurement of electricity, and measurement devices using acoustic emission technology, which can solve the problem of high cost and achieve the effect of improving safety.
CN110441707APending Publication Date: 2019-11-12SHENZHEN POLYTECHNIC
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHENZHEN POLYTECHNIC
Publication Date
2019-11-12

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Abstract

The invention provides a system for detecting the health state acoustic emission of a lithium ion battery. The charging and discharging equipment is electrically connected with the lithium ion batteryand is used for charging or discharging the lithium ion battery; an acoustic emission sensor is used for receiving an acoustic emission signal inside the lithium ion battery and converting the acoustic emission signal into an electric signal; a processing terminal is electrically connected with the acoustic emission sensor; and the processing terminal is used for receiving the electric signal output by the acoustic emission sensor. The system belongs to non-embedded detection, does not change the internal structure of the lithium ion battery, and improves the safety of the detection of the lithium ion battery.
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Description

technical field

[0001] The invention belongs to the technical field of lithium ion batteries, and in particular relates to an acoustic emission detection system and method for the health status of lithium ion batteries. Background technique

[0002] With the development of society, energy issues have gradually attracted the attention of various countries. The limitation of fossil energy has made various countries start to look for healthier and more environmentally friendly renewable energy. As a clean and efficient new energy battery, lithium-ion batteries have obvious advantages compared with other secondary batteries, and are used and promoted by various electronic industries. Under the premise of such a large number of uses, the safety and health of lithium-ion batteries have received more attention.

[0003] There are many existing lithium-ion battery detection technologies, which mainly include three parts: 1. Electrical parameter detection: the most common EIS impeda...

Claims

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