An electric vehicle, a battery pack, and a firefighting fluid storage device are disclosed, which relate to the technical field of energy storage devices. The firefighting fluid storage device includes: a box body, where the box body includes an inner cavity and a fluid outlet, the inner cavity is configured to accommodate a firefighting fluid, and the fluid outlet communicates with the inner cavity; and a gas generation component, where the gas generation component is mounted to the box body and configured to release a gas to the inner cavity. When the gas generation component releases the gas, the firefighting fluid moves toward the fluid outlet under the action of the gas.

Embodiments are directed to a rotorcraft comprising an airframe having an engine compartment, an engine disposed within the engine compartment, at least one fire bottle configured to hold a fire extinguishing agent, at least one agent tube coupled to the fire bottle and configured to carry the fire extinguishing agent to the engine compartment, and a nozzle on the at least one agent tube, the nozzle positioned above the engine and oriented in a downward-facing direction. The nozzle has at least one opening and is configured to allow liquid to drain out of the at least one opening instead of allowing the liquid to flow into the at least one agent tube. The nozzle may have a chamfer opening that faces downward.

A fire extinguishing equipment including an extinguishing-launching part-unit and a pressure-resistant storage body with an internal space housing a fire extinguishing material. A transport pipe is connected to the internal space to transport the fire extinguishing material to a use location. An extinguishing part-unit is connected to the external end of the transport pipe and includes one or more event-detecting part-units, which are connected to the extinguishing-launching part-unit. The extinguishing-launching part-unit is supplemented with a separation fitting disposed within the transport pipe, separated from a transport regulation fitting also disposed within the transport pipe. A reference pressure supply part-unit is within the transport pipe between the separation fitting and the transport regulation fitting. Each of the transport regulation fitting and the separation fitting includes a clamping housing and a rupture disc fixed therein, which rupture upon detection of a fire to dispense the fire extinguishing material.

A fire extinguishing equipment with improved characteristics which includes a pressure-resistant storage body with an internal space that houses a fire extinguishing composition. A monitoring unit is connected to the storage body to measure and regulate one or more physical characteristics. At least one discharge outlet is in communication with the internal space of the storage body and is configured to discharge the fire-extinguishing composition from the internal space to a use location. A charging inlet is disposed within the storage body and is configured to fill the internal space with the fire-extinguishing composition. An extinguishing-launching part-unit is inserted into a pipe section between the use location and the discharge outlet.

Described herein are zonal fire suppression systems and methods of using such systems for suppressing fires in cargo aircraft. A system is configured to individually monitor the temperature in each of multiple cargo zones in the cargo area. The system is also configured to selectively activate one or more of multiple zone distribution components to distribute a fire suppressant material, based at least on the temperature monitoring. The zonal approach to the temperature monitoring and to the fire suppressant material distribution allows reducing the fire suppressant material amount needed on the cargo aircraft, which, in turn, reduces the aircraft load. Furthermore, in some examples, the zonal approach eliminates unnecessary contact between the cargo (e.g., in the zones unaffected by fire) and the fire suppressant material. In some examples, this fire suppression involves depressurizing of the cargo area, in addition to or instead of the fire suppressant material distribution material.

The application discloses a battery pack, vehicle and control method for alleviating spreading of thermal runaway of a battery pack. The battery pack includes: a plurality of secondary batteries, a housing of each of which includes a weakened portion, so that a heat flow resulting from thermal runaway of the secondary battery is able to break through the weakened portion to be discharged; a spray pipeline which is arranged corresponding to and at a spacing from weakened portions of the secondary batteries, at least a portion of the spray pipeline corresponding to the weakened portions being a breakthrough region which is able to form an opening under an action of the heat flow, a spray medium in the spray pipeline being sprayed to an abnormal secondary battery in thermal runaway via the opening; where a weight A of the sprayed spray medium is determined according to an equation (0.8 A).sup.0.85×D/B≥2.6.

A fire suppression system includes a feed port and a channel to couple the feed port to an actuation chamber. A solenoid valve controllably blocks a connection between the feed port and the channel. Pressure from the feed port builds up in the actuation chamber based on the solenoid valve unblocking the connection. A piston is in communication with the actuation chamber. The system also includes an inlet port closed off by a disc. The piston travels through the inlet port and burst the disc based on the pressure in the actuation chamber. An outlet port is coupled to the inlet port.

A fire suppression system includes a delivery system that is configured to receive fire suppressant agent from a reservoir and provide the fire suppressant agent to an area at a flow rate, according to some embodiments. In some embodiments, the delivery system is further configured to provide a first quantity of fire suppressant agent to an area at a first flow rate during a first time interval. In some embodiments, the delivery system is further configured to provide a second quantity of fire suppressant agent to the area at a second flow rate during a second time interval. In some embodiments, the second flow rate is less than the first flow rate. In some embodiments, the first and the second quantity of fire suppressant agent are provided to the area via a nozzle.

The present application is provided with a fluid storage apparatus of a battery pack, including: a box, where the box has an inner cavity; a partition member, where the partition member is located in the inner cavity of the box, and the partition member divides the box into a fluid storage portion and a gas storage portion. The fluid storage portion is used to store spraying liquid and the fluid storage portion has a fluid outlet; the gas storage portion is used to store gas and the gas storage portion has a fluid inlet. And the partition member is configured to move toward the fluid outlet under the action of compressed gas in the gas storage portion.

A fire-fighting foam stock tank includes a stock solution tank, a bladder set inside the stock solution tank, and a liquid collecting pipe installed inside the bladder. The stock solution tank has a first end tank wall provided with a first maintenance hole and a first hole cover. There is a hole plug on the inner surface of the first hole cover, so that the hole plug extends into the first maintenance hole until it is close to the inner wall surface of the stock solution tank, so that the inner wall surface is kept flat. The liquid collecting pipe is a T-shaped pipe composed of a first pipe section and a second pipe section. The bladder fits the liquid collecting pipe shape.