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Method for predicting storage battery faults

A battery and fault technology, which is applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as time-consuming, heavy operation workload, and inconvenience for repeated operations.

Inactive Publication Date: 2013-11-27
BEIJING UNIV OF TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the operation workload is large and time-consuming, so it is not easy to repeat the operation, and repeated capacity measurement is not good for the battery, and the battery cannot be used in an emergency
In addition, capacity experiments require special test equipment for high-voltage batteries, which may be dangerous

Method used

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  • Method for predicting storage battery faults
  • Method for predicting storage battery faults
  • Method for predicting storage battery faults

Examples

Experimental program
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Embodiment Construction

[0049] For nickel-cadmium batteries, the failure sets and symptom sets are arranged in order of importance:

[0050] Fault V={capacity decreases, internal resistance increases, aging};

[0051] Symptom U={group B voltage at the same moment / 14-unit voltage, ΔU / Δt, ΔU is extremely large}; since n=3;

[0052] weighted judgment matrix R = 1 / 2 1 / 4 1 / 4 1 / 4 1 / 2 1 / 4 1 / 4 ...

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Abstract

The invention discloses a method for predicting storage battery faults, and belongs to the field of storage battery fault prediction and diagnosis. The method is characterized in that whether a battery is broken down is predicted according to related data during the battery use process; according to the knowledge-based method for predicting the health status of the storage battery, namely, a fuzzy prediction method, degrees of membership of various faults are solved according to degrees of membership of certain symptoms and used for representing tendency of various faults, and scientific basis is provided for predicting the health status of the storage battery; and the method is proposed in order to effectively predict the faults of the battery and a battery pack, experimental data is obtained with a nickel-cadmium battery serving as an experimental subject, the DOH (degree of health) of the battery or the battery pack in the whole operation process can be obtained through analysis and processing for real-time data of the nickel-cadmium battery, and simultaneously maintenance information of the battery is given. The method is simple and effective, the disassembly and the discharge testing of the battery are avoided, and the accurate battery health level is obtained.

Description

1. Technical field [0001] The invention relates to the field of fault prediction and diagnosis of accumulators. 2. Background technology [0002] With the rapid development of my country's economy, the requirements for energy, transportation, environment and many other fields are also constantly improving. The battery pack is an indispensable power supply system for all power supply systems that do not allow power interruption. And the application of battery system in all walks of life is also more and more extensive. Whether the operation of the storage battery is normal will directly affect the normal, reliable and safe operation of various equipment in this field. [0003] Battery fault diagnosis technology is a new technology that has only been developed in recent years. At present, the research on battery fault diagnosis system in the world has not yet achieved remarkable results. In the application and maintenance of the battery, the most commonly used method is the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 张彦琴卢明哲刘汉雨
Owner BEIJING UNIV OF TECH
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