Battery on-line monitoring method, device, equipment and system

Abstract

The invention provides a battery on-line monitoring method, device, equipment and system. The method comprises the steps: acquiring, in real time, first operation parameter data corresponding to at least one battery in a one-to-one mode and second operation parameter data corresponding to a battery pack comprising at least one battery; monitoring whether the first operation parameter data and thesecond operation parameter data are abnormal or not, and sending a first-stage alarm signal to an upper computer if the first operation parameter data and the second operation parameter data are abnormal; monitoring the variable quantities of the first operation parameter data and the second operation parameter data, and comparing the variable quantities with a first threshold value and a second threshold value respectively; and when the variable quantity of the first operation parameter data is greater than a first threshold value and the variable quantity of the second operation parameter data is greater than a second threshold value, sending a second-stage alarm signal to the upper computer, and meanwhile, cutting off battery power supply to realize fault protection. Compared with the prior art, the method has the advantages that the battery operation state can be monitored in real time, an alarm signal is sent in time to remind a user, battery power supply is cut off when a seriousfault occurs, and serious safety accidents are avoided. Besides, the battery temperature threshold value is monitored in real time, and the battery over-temperature protection is realized by monitoring the abnormality of the temperature variation of the battery in real time, so that the reaction is sensitive, the accuracy is high, and the misjudgment risk is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of laboratory battery detection, in particular to an online battery monitoring method and its device, equipment and system. Background technique [0002] In the prior art, when testing the performance of batteries or battery packs in the laboratory, most of them use simple temperature sensors and current transformers to monitor their status abnormalities to achieve overcurrent and overheat protection. The detection methods and judgment principles are too simple , the reliability is not high, and there are often errors that cause the ongoing battery test experiment to not be carried out normally, or the phenomenon of over-current, over-discharge, over-charge and overheating cannot be found in time, which may burn out the laboratory equipment, and in severe cases, it will explode and cause a fire. result in personal injury or death. Contents of the invention [0003] In view of the above problems, the prese...

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Problems solved by technology

[0002] In the prior art, when testing the performance of batteries or battery packs in the laboratory, most of them use simple temperature sensors and current transformers to monitor their status abnormalities to achieve overcurrent and overheat protection. The detection methods and judgment principles are too simple , the reliability is not high, and there are often errors that cause the ongoing battery test experiment to not be carried out normally, or the phenomenon of over-current, over-discharge, over-charge and overheating cannot be found in time, which may burn out the laboratory equipment, and in severe cases, it will explode and cause a fire. cause casualties

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