Health degree detection method and system of storage battery

Abstract

The invention relates to a health degree detection method and system of a storage battery. The method comprises: collecting an actual first internal resistance value of a storage battery and collecting a storage battery verification value within a set period of time; calculating a second internal resistance value of the storage battery in a full health degree state according to the first internalresistance value and the storage battery verification value; and collecting a first internal resistance value corresponding to the current health degree of the storage battery in an online manner andcalculating a health degree, changing with the internal resistance value, of the storage battery based on the first internal resistance value and the second internal resistance value in a full healthdegree state. The detection method and system have the following beneficial effects: the corresponding health degree can be calculated when the internal resistance value of the storage battery is measured within the online full-service-life operation period of the battery as long as the current internal resistance value and the corresponding health degree of the storage battery are measured once,so that lots of manpower and materials are saved and the safety and reliability of the backup power supply are ensured; the high accuracy and effectiveness of health measurement are guaranteed; and real-time monitoring of storage battery health and other data is realized, so that lots of storage batteries can be managed.

Description

technical field [0001] The invention relates to a method and system for detecting the health degree of a storage battery, belonging to the field of computers. Background technique [0002] Batteries are widely used in power DC systems such as power plants, power supply bureaus, and substations; computer rooms and base stations of communication companies; Backup power supply occasions such as UPS computer room. [0003] The health of a new factory battery is about 100%-110% when it is fully charged. With the increase of use time, the internal resistance is also increasing due to the formation of sulfate crystals on the plate and the loss of water in the battery. degree also decreased. [0004] The batteries in the above applications are in the state of floating charge for a long time, and only in the state of discharge when the AC power is cut off, so as to ensure the safe operation of the electrical equipment. But what is the health status of the long-term floating charge...

AI Technical Summary

Problems solved by technology

In order to know the health of the battery, the traditional method is to regularly disconnect the battery pack from the power supply system after it is fully charged, and conduct a capacity checking test according to the 10-hour discharge rate to judge the real capacity (health) of the battery. A lot of manpower and material resources and power system security risks when the battery is offline

At the same time, because this method cannot be tested online, it cannot accurately measure the health of the battery in real time online

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