Method for estimating aging rate and testing fault of battery and apparatus for managing and monitoring battery

Abstract

The present invention discloses an ageing rate estimation method of storage battery. Said method includes the following steps: defining discharge data and discharge capacity characteristic data of storage battery; using nominal life of storage battery as reference, using its discharge curve as ageing curve; when the storage battery is come into floating charge state from equalizing charge state, defining its position in ageing curve and estimating its ageing rate; when the discharge exceeds predefined discharge depth, according to the comparison result of capacity discharged from the present discharge to described selected capacitor point and new storage battery capacity renewing ageing rate; then utilizing said renewed ageing rate to correct the position of storage battery in ageing curve. Said invention also discloses a fault detection method of storage battery and a storage battery management monitoring device.

Description

technical field [0001] The invention relates to the fields of accumulator, accumulator aging rate estimation and advanced battery management, in particular to methods and devices for accumulator aging rate estimation and accumulator fault detection. Background technique [0002] Usually, only important systems are equipped with a battery backup power system. The battery is the last link on which system reliability depends, and it is also the weakest link in system reliability. Therefore, the maintenance and management of the storage battery is of great significance to the availability of the system. [0003] The function of battery management is generally required to be directly provided by the AC and DC uninterruptible power supply system. However, because the research work on battery management technology is very time-consuming, labor-intensive and costly, most power supply manufacturers' storage power systems only have very simple charging systems. Discharge management f...

AI Technical Summary

Problems solved by technology

[0008] The invention provides a method for estimating the aging rate of a battery pack, which solves the problems in the prior art that the estimation of the aging rate requires a special load, the process is complicated and time-consuming, and the estimation error increases with the use time;

[0009] The present invention also provides a fault detection method for a storage battery pack, which solves the problems in the prior art that only a single storage battery can be detected offline, the accuracy is low, and the hardware cost of the detection device is high

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