Lithium battery management system with fire management function

Abstract

The invention discloses a lithium battery management system with a fire management function, which comprises a battery condition monitoring and management module and a fire management module, whereinthe fire management module comprises a fire detection early warning unit, a fire data processing unit and a fire control unit; the fire detection early warning unit is used for detecting the fire state of the battery module, collecting the fire information and sending an early warning signal; the fire data processing unit is configured to calculate the fire extinguishing agent amount required forthe fire extinguishing of the battery module after receiving the early warning signal; and the fire control unit is used for sending a control signal according to the early warning signal, spraying the fire extinguishing agent to the fire battery module corresponding to the early warning signal for directional fire extinguishing and accurately controlling the fire extinguishing agent use amount according to the fire extinguishing agent use amount parameter. Through linkage control of the battery management and the fire management, directional and accurate fire extinguishing for each module inthe lithium battery energy storage system can be realized, the safety of the lithium battery energy storage system is improved, the fire extinguishing agent use amount can also be accurately controlled, and the fire cost is reduced.

Description

technical field [0001] The invention relates to energy storage technology, in particular to a lithium battery management system with fire management function. Background technique [0002] Lithium batteries have high power density and energy density, and have been rapidly developed and applied in recent years. Among them, the main functions of the lithium battery management system include battery status monitoring, SOC estimation, balance management, thermal management, communication and abnormal alarm, etc. With the large-scale application of lithium batteries in electric energy storage, electric vehicles and other fields, especially with the promotion of DC distribution network, there will no longer be an on-site monitoring level, and the BMS of the DC power supply will directly communicate with the station-level monitoring Therefore, BMS is required to have more complete protection functions including fire management. Lithium batteries are energetic substances. During u...

AI Technical Summary

Problems solved by technology

This method uses water as the fire extinguishing medium. After the fire is extinguished, the battery in the energy storage power station will be short-circuited and damaged, so that it cannot be used normally.

[0007] The applicant found that the existing lithium battery BMS is mainly designed for battery status monitoring, SOC estimation, balance management, thermal management, communication and abnormal alarm, etc., without considering the fire management of lithium batteries

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