Lithium battery pack battery management system for solar panel

Abstract

The invention discloses a lithium battery pack battery management system for a solar panel. The lithium battery pack battery management system comprises a lithium battery pack, a master control module, a power supply management module and an external expansion communication module and is characterized in that the power supply management module is in communication connection with the master controlmodule, the external expansion communication module is in communication connection with the master control module, the signal input end of the master control module is electrically connected with thesignal output ends of a temperature detecting module, a voltage detecting module and a current detecting module, and the signal output end of the master control module is electrically connected withthe signal input ends of a multichannel battery equalization control module, a charging and discharging detection enabling control module and an indicator lamp module. The lithium battery pack batterymanagement system has the advantages that the system is extremely low in stand-by power consumption, and the problem that the lithium batteries, which are fully charged when leaving a factory, of a lithium battery pack is over-discharged and damaged after self-discharge, and the lithium batteries cannot be charged through the solar panel is solved.

Description

Technical field [0001] The invention belongs to the technical field of lithium battery pack power management, and specifically relates to a lithium battery pack battery management system for solar panels. Background technique [0002] At present, lithium battery packs usually use multiple lithium battery cells in parallel, and then multiple parallel cell groups are connected in series to form a lithium battery pack with the required voltage and capacity. In the process of charging the lithium battery pack, due to the difference of the lithium battery cells, the voltage of the cells between the lithium battery packs will be unbalanced during charging and discharging. When charging, when the voltage difference between the cells is too high, the cells with high voltage will be overcharged, which will cause the deterioration of the lithium battery pack, damage the entire set of lithium batteries, and seriously affect the life of the lithium battery pack. [0003] BMS is the first lett...

AI Technical Summary

Problems solved by technology

Due to the different standby power consumption of different BMS, when the lithium battery is fully charged and self-discharged when it leaves the factory, it will be found at the installation site that many lithium battery cells have been discharged and damaged, and solar panels cannot be used to repair them. charging failure

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