Method and system for detecting abnormal batteries in lithium battery pack

A lithium battery pack and detection method technology, applied in the direction of nuclear methods, measuring electricity, measuring devices, etc., can solve problems such as the inability to realize fine detection of abnormal batteries, and achieve meticulous and in-place monitoring and management, simple measurement, and easy implementation

Pending Publication Date: 2021-04-09
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a detection method and system for abnormal batteries in lithium battery packs, the purpose of which is to solve the technical problem that the prior art cannot realize fine detection of abnormal batteries in lithium battery packs

Method used

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  • Method and system for detecting abnormal batteries in lithium battery pack
  • Method and system for detecting abnormal batteries in lithium battery pack
  • Method and system for detecting abnormal batteries in lithium battery pack

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Embodiment 1

[0045] A method for detecting abnormal batteries in a lithium battery pack, such as figure 1 shown, including the following steps:

[0046] S1. Detect the terminal voltage, temperature and charge state of each lithium battery in the lithium battery pack at the current moment; wherein, the terminal voltage and temperature of each lithium battery in the lithium battery pack constitute the abnormal characteristic characteristics of the lithium battery pack, the charge state of the lithium battery and The terminal voltage or temperature constitutes the attenuation characteristics of lithium batteries;

[0047] S2. Input the abnormal characteristic features of the obtained lithium battery pack into the pre-trained abnormal battery judgment model, and identify the positions of all abnormal batteries in the lithium battery pack;

[0048] Specifically, the above-mentioned training method of the abnormal battery judging model includes the following steps:

[0049] S021, building its...

Embodiment 2

[0106] A detection system for abnormal batteries in a lithium battery pack, comprising:

[0107] A feature collection module, configured to execute step S1 in the method for detecting abnormal batteries in a lithium battery pack provided in Embodiment 1 of the present invention;

[0108]An abnormal location module, configured to execute step S2 in the method for detecting abnormal batteries in a lithium battery pack provided in Embodiment 1 of the present invention;

[0109] The attenuation rate estimation module is used to execute step S3 in the method for detecting abnormal batteries in lithium battery packs provided in Embodiment 1 of the present invention.

[0110] The relevant technical features are the same as those in Embodiment 1, and will not be repeated here.

Embodiment 3

[0112] A computer-readable storage medium, the computer-readable storage medium includes a stored computer program, wherein, when the computer program is run by a processor, the device where the storage medium is located is controlled to execute the lithium battery provided in Embodiment 1 of the present invention. A detection method for abnormal batteries in a battery pack.

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Abstract

The invention discloses a method and system for detecting an abnormal battery in a lithium battery pack, and belongs to the technical field of lithium battery pack life prediction and estimation, and the method comprises the following steps: S1, detecting the terminal voltage, the temperature and a charge state of each lithium battery in the lithium battery pack at the current moment, wherein the terminal voltage and temperature of each lithium battery in the lithium battery pack form an abnormal characterization characteristic of the lithium battery pack, and the charge state of the lithium battery and the terminal voltage or temperature form an attenuation characteristic of the lithium battery; s2, inputting the obtained abnormal characterization characteristics of the lithium battery pack into a pre-trained abnormal battery judgment model, and identifying the positions of all abnormal batteries in the lithium battery pack; and s3, respectively inputting the attenuation characteristics of each abnormal battery into a pre-trained attenuation rate estimation model to obtain the attenuation rate of each abnormal battery. According to the invention, fine detection of abnormal batteries in the lithium battery pack is realized, more careful and in-place monitoring and management can be provided for the lithium battery pack, and faults in the lithium battery pack are effectively prevented.

Description

technical field [0001] The invention belongs to the technical field of life prediction and estimation of lithium battery packs, and more particularly relates to a method and system for detecting abnormal batteries in lithium battery packs. Background technique [0002] Due to the advantages of high power density, environmental protection, no memory effect, and long service life, lithium batteries have a wide range of applications in military, transportation, power stations and other fields. With the promotion of their applications, the health management of lithium batteries has become a It is an indispensable link to ensure the safe, stable and efficient operation of lithium batteries is the key to the stability of the entire system. In practical applications, due to the rigid conditions of capacity, voltage stress, and current stress, etc., multiple batteries are often used in series and parallel to form a lithium battery pack to meet the demand. In the actual production p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/27G06F30/3323G06N20/10G01R31/367G01R31/387G01R31/396G06F119/04
CPCG01R31/367G01R31/387G01R31/396G06N20/10G06F30/27G06F30/3323G06F2119/04
Inventor 蒋建华吴平徐豪汪浩李曦
Owner HUAZHONG UNIV OF SCI & TECH
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