Abstract: Disclosed in the present invention is a prevention and control method of nitrogen protection and multi-region level-by-level detection for an energy storage power station. The prevention and control method of nitrogen protection and multi-region level-by-level detection for an energy storage power station includes two modes: a normal operating mode and an abnormal mode. In the two modes, fire extinguishing measures of different levels are adopted for a battery pack, a battery cluster, a battery compartment, and a device compartment with reference to early warning thresholds of different levels. Further disclosed is a prevention and control system of nitrogen protection and multi-region level-by-level detection for an energy storage power station.

Abstract: The present invention discloses an exhaust filter system for a battery pack, including an explosion-proof valve and a filter apparatus. One end of the explosion-proof valve is connected to a battery pack. The other end of the explosion-proof valve is connected to the filter apparatus. The filter apparatus includes an introduction port, a discharge port, a housing, and a filter mechanism. The introduction port and the discharge port are separately disposed at two ends of the housing. The filter mechanism is disposed inside the housing. The filter mechanism is provided with a plurality of filter holes. The present invention has the following beneficial effects: by optimal design of a novel explosion-proof valve and a novel filter apparatus, the applicability of technical solutions of this application is made more extensive. The problem of fire induced by thermal runaway can be satisfactorily solved for both high-capacity batteries and small-capacity batteries.