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Fault analysis method and system for battery module

A fault analysis method and battery module technology, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve problems such as low efficiency and long consumption cycle, so as to improve analysis efficiency, improve analysis time and efficiency, and quickly discover problem effect

Active Publication Date: 2017-10-10
BEIJING BORGWARD AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The method can solve the problems of long consumption period and low efficiency

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  • Fault analysis method and system for battery module
  • Fault analysis method and system for battery module
  • Fault analysis method and system for battery module

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Embodiment Construction

[0025] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0026] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or e...

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Abstract

The present invention proposes a fault analysis method and system for a battery module, wherein the method includes the following steps: a current disturbance step, performing current disturbance on the battery module within a predetermined frequency range to obtain a dynamic impedance result, and the battery module includes multiple battery; generating step, obtaining a corresponding dynamic impedance change graph according to the dynamic impedance result of each battery in the battery module, the dynamic impedance change graph includes multiple intervals; analysis step, according to the shape of multiple intervals in each dynamic impedance change graph Change analysis for battery module failures. According to the battery module fault analysis method of the embodiment of the present invention, the fault is determined through the shape changes of multiple intervals in each dynamic impedance change graph, thereby improving the analysis time and efficiency, and enabling timely and rapid discovery of problems.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a method and system for analyzing a battery module failure. Background technique [0002] Under the current mainstream development trend of paying more and more attention to energy saving and environmental protection, electric vehicles, as an emerging technology, are gradually being promoted and industrialized. Among the many technical difficulties, the analysis and summary of the battery, which is the core component that provides power, is particularly important. Through the analysis of the battery, not only can the root cause of the problem be found quickly, but also it is closely related to the improvement of the overall performance of the battery such as energy saving and efficiency. [0003] In the past, when analyzing the problems in the operation of electric vehicles, it is generally used to replace the batteries, and analyze the battery core problems through dismantlin...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/36
Inventor 丁海鹏
Owner BEIJING BORGWARD AUTOMOBILE CO LTD