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Method and system for detecting abnormal voltage collection caused by non-self fault of battery

A technology of voltage acquisition and self-failure, applied in the direction of measuring current/voltage, measuring electricity, measuring device, etc., to reduce the undervoltage of the cell and avoid secondary hazards

Active Publication Date: 2019-04-12
江苏和中普方新能源科技有限公司
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AI Technical Summary

Problems solved by technology

If the user cannot determine whether the failure of the single battery or battery module is caused by its own failure or not, it is impossible to take corresponding measures to solve the failure, and thus it is impossible to avoid safety accidents such as spontaneous combustion of electric vehicles caused by battery failure

Method used

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  • Method and system for detecting abnormal voltage collection caused by non-self fault of battery

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Embodiment Construction

[0048] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0049] Such as figure 1 As shown, a detection method for abnormal voltage acquisition caused by a battery failure other than itself, including:

[0050] S11: Obtain the working state and voltage of the battery;

[0051] S12: When the voltage satisfies a preset fault condition corresponding to the working state, it is determined that the abnormal voltage collection is not caused by a self-fault.

[0052] The method for detecting abnormal voltage collection caused by non-self-fault of the battery of the present invention combines the charging and discharging characteristics of the battery to detect whether the voltage of the battery satisfies the preset fault conditions in the corresponding working state, thereby acc...

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Abstract

The invention relates to a method and system for detecting abnormal voltage collection caused by a non-self fault of a battery. The method includes the following steps: the working status and voltageof the battery are obtained, and when the voltage meets the preset fault conditions in the corresponding working state, abnormal voltage collection caused by the non-self fault is judged. According tothe detecting method, combined with the charging and discharging characteristics of the battery, by detecting whether the voltage of the battery meets the preset fault conditions in the correspondingworking state or not, abnormal voltage collection caused by the non-self-fault of the battery is accurately judged, fault alarm that a single body is lack of the voltage and the voltage difference ofthe single body is too large is reduced, a basis is provided for battery management strategies, corresponding measures are convenient to take to solve the fault, and then secondary hazards brought bythe fault of the battery are avoided.

Description

technical field [0001] The invention relates to the technical field of battery fault detection, in particular to a detection method and system for abnormal voltage collection caused by non-self faults of the battery. Background technique [0002] At present, with the increasing environmental problems such as smog weather, greenhouse effect, and energy crisis, people's awareness of sustainable development is gradually increasing, and sustainable energy products such as electric vehicles are also becoming more and more popular. The energy storage device of electric vehicles is a battery system, which mainly includes the integration of battery cells or battery modules, battery management systems, high / low voltage circuits, and cooling devices. In recent years, there have been many safety accidents such as spontaneous combustion of electric vehicles at home and abroad. Most of the safety accidents such as spontaneous combustion of electric vehicles are caused by the failure of t...

Claims

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Application Information

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IPC IPC(8): G01R31/3835G01R19/165
CPCG01R19/16528G01R19/16542
Inventor 于静美饶帆顾辉曾纪良
Owner 江苏和中普方新能源科技有限公司
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