Energy storage battery compartment fire early warning device and method

Abstract

The invention discloses a fire early warning device and method for an energy storage battery compartment, and the device monitors the concentration of various types of gas escaped before the thermal runaway of an energy storage battery in the energy storage battery compartment through a characteristic gas detector, and transmits the monitored gas concentration data to a gas concentration judgmentand uploading unit; the gas concentration judgment and uploading unit calculates the gas concentration data, determines an alarm grade according to a calculation result, and uploads the calculation result to an energy storage power station monitoring system to manage charging and discharging of an energy storage battery cluster, so that early warning of the fire risk of the battery compartment isrealized. According to the method, different types of gases generated by battery thermal runaway are classified, and battery compartment fire risk grading identification and echelon alarming are carried out through threshold overrun judgment, concentration rising trend judgment and gas concentration combined analysis. The missed judgment and misjudgment probability is small, the sensitivity and reliability of fire early warning of the energy storage battery compartment are greatly improved, and the safe operation level of an energy storage power station is improved.

Description

technical field [0001] The invention relates to energy storage technology, in particular to a fire warning device and method for an energy storage battery compartment. Background technique [0002] Energy storage technology has broad prospects for development in distributed energy, power flow optimization, load demand response, and improvement of fossil energy utilization efficiency. In recent years, electrochemical energy storage power stations have been widely used in power systems and have become the fastest growing form of energy storage in engineering construction. But at the same time, the large-scale construction of energy storage power stations has also brought new challenges to the safe operation of the power system. At present, the batteries used for energy storage are mainly lithium-ion batteries and lead-acid / lead-carbon batteries, and their safety factors are relatively high. , but as an energy storage device, its internal energy always has a tendency to releas...

AI Technical Summary

Problems solved by technology

[0004] To sum up, the current multi-gas monitoring energy storage power plant fire alarms generally have problems such as unclear gas selection, inaccurate alarm thresholds, and imperfect action strategies.

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