Power battery fault diagnosis method based on sliding window

A power battery and fault diagnosis technology, which is applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve the problems of difficult real-time online application and large amount of calculation, and achieve the effect of online diagnosis, simple method and high calculation efficiency

Active Publication Date: 2020-03-24
BEIJING INSTITUTE OF TECHNOLOGYGY +1
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Problems solved by technology

[0002] There are many existing power battery fault diagnosis methods, such as multi-level 3σ screening method, entropy weight method, entropy-based fault diagnosis method, etc., but all of them have the problem of large amount of calculation and difficult real-time online application

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  • Power battery fault diagnosis method based on sliding window

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] The purpose of the present invention is to provide a power battery fault diagnosis method based on a sliding window, which can perform real-time diagnosis on a single power battery.

[0034] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] figure 1 It is...

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Abstract

The invention discloses a power battery fault diagnosis method based on a sliding window. The method comprises the following steps: acquiring single voltage values of a power battery for multiple times; establishing a single voltage matrix according to the single voltage values; setting the size of a sliding calculation window, wherein the calculation window comprises all single voltage values ofpreset sampling times; acquiring the single voltage value from the first row of the single voltage matrix by using the calculation window; obtaining a median of each row of single voltage values in the calculation window; subtracting the median of each row from each monomer voltage value of each row to obtain a first result; calculating a variance value of each column in the first result to obtaina second result; carrying out abnormal variance value screening on the second result by adopting a Pauta criterion; and moving the calculation window downwards for one row, and skipping to the step to obtain the median of each row of monomer voltage values in the calculation window until the traversal of the monomer voltage matrix is finished. According to the invention, the single power batterycan be diagnosed in real time.

Description

technical field [0001] The invention relates to the technical field of power battery fault diagnosis, in particular to a power battery fault diagnosis method based on a sliding window. Background technique [0002] There are many existing power battery fault diagnosis methods, such as multi-level 3σ screening method, entropy weight method, entropy-based fault diagnosis method, etc., but all of them have the problem of large amount of calculation and difficult to apply online in real time. Contents of the invention [0003] The purpose of the present invention is to provide a power battery fault diagnosis method based on a sliding window, which can perform real-time diagnosis on a single power battery. [0004] To achieve the above object, the present invention provides the following technical solutions: [0005] A method for fault diagnosis of a power battery based on a sliding window, comprising: [0006] Obtain the single voltage value of the power battery multiple tim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/367G01R31/396
CPCG01R31/367G01R31/396
Inventor 刘鹏王震坡尹豪张照生孙振宇武烨侯毅
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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