Patent Description:
At present, electric vehicle safety accidents occur frequently. One of the major factors causing electric vehicle safety accidents is spontaneous combustion of battery packs. The battery pack includes a box body and battery units located inside the box body. When thermal runaway occurs with a battery unit, a high-temperature heat flow is released. After the high-temperature heat flow leaks and comes in contact with the air, the heat flow is prone to combustion. The battery pack burns when the heat flow diffuses to an adjacent battery unit. This severely harms personal safety of passengers and drivers.

Therefore, current battery packs are usually provided with a firefighting spraying system. The firefighting spraying system includes a liquid storage device and a gas storage device. A compressed gas in the gas storage device drives a firefighting liquid in the liquid storage device to spray.

However, the foregoing firefighting spraying system that includes the gas storage device and liquid storage device occupies large space and is not conducive to space layout. In addition, that the gas storage device stores the compressed gas increases latent dangers of the battery pack.

<CIT> discloses a power battery system extinguishing device and car. This power battery system extinguishing device includes: controller, gas cylinder and fire extinguishing agent storage bottle, wherein, the first end of controller and the power battery package are connected, the second end of controller and the first end of gas cylinder is connected, the first end of gas cylinder and the first end of fire extinguishing agent storage bottle are connected. Through separately saving high - pressure gas and fire extinguishing agent, when putting out a fire, pour fire extinguishing agent storage bottle with high -pressure gas, spray the fire extinguishing agent by fire extinguishing agent storage bottle and put out a fire to the battery package to guarantee normally putting out a fire of battery package, guaranteed the safety of whole car.

<CIT> discloses a novel power lithium battery box body of a pure electric vehicle, which comprises a battery box outer shell, a fire extinguishing agent storage steel cylinder, an air electric brake, an atomizer, a battery and a pressure sensor. When an automobile is in danger of fire due to over-discharge of a battery or over-high temperature after collision or is on fire, a temperature sensor at the upper end of the battery sends out a high-temperature danger signal to a fire extinguishing agent storage steel cylinder, and meanwhile, heptafluoropropane stored in the fire extinguishing agent storage steel cylinder is discharged and quickly sprayed out through an atomizer and a transverse spray head; when an automobile is collided, the pressure sensor can carry out pressure detection, a pressure signal is sent to the temperature sensor, and if the temperature rises and exceeds the normal temperature, the fire extinguishing agent storage steel cylinder is started immediately, and heptafluoropropane is released. The utility model achieves the effect of quickly reducing the high temperature of the battery or retarding flame in case of fire, and solves the problem that the conventional power battery cannot be cooled and retarded in case of fire.

<CIT> discloses a battery module, a fire extinguishing apparatus and a support structure. The battery module comprises multiple groups of module support frames, wherein the module support frames are provided with multiple first through holes; the fire extinguishing apparatus installed on the module support frames, wherein the fire extinguishing apparatus is provided with an accommodating cavity, and the accommodating cavity is filled with a flame-resistant material; and multiple battery cells, wherein the battery cells are installed between the two groups of the neighboring module support frames, one end of each battery cell corresponds to the position of the first through hole of one group of the module support frame, and the other end corresponds to the position of the first through hole of the other group of the module support frame. In use, while the temperature of the battery cells is risen, and the fire extinguishing apparatus is heated to be damaged, the flame-resistant material is released for performing the thermal instability protection to the battery cells of the battery module.

In view of this, embodiments of the present application provide a firefighting fluid storage device, a battery pack, and an electric vehicle to resolve all or at least some of the foregoing problems.

An embodiment of the present application provides a firefighting fluid storage device, including:.

In a possible design, the first cavity includes a first side wall, and the second cavity includes a second side wall. the fluid outlet is disposed on the first side wall. The gas generation component is disposed on the second side wall.

In a possible design, the deformable portion includes at least a first deformed state and a second deformed state;.

In a possible design, the first side wall and the second side wall are disposed opposite each other.

In a possible design, the mounting portion is inclined in a height direction.

In a possible design, the box body is a rectangular structure. In the height direction, the box body includes a top wall and a bottom wall disposed opposite each other;.

In a possible design, the box body includes a first box body and a second box body that are separate from each other;.

In a possible design, the gas generation component is detachably connected to the box body.

In a possible design, a sealing ring is disposed between the gas generation component and the box body.

An embodiment of the present application provides a battery pack, including:.

In a possible design, the battery pack further includes:.

In a possible design, a control circuit is disposed inside the gas generation component. The control circuit includes a temperature control fuse;
when the temperature control fuse is blown, the control circuit can control the gas generation component to release the gas.

An embodiment of the present application further provides an electric vehicle, including the battery pack described above.

To more clearly describe the technical solutions in the embodiments of the present application, the drawings required for describing the embodiments will be briefly described below. Apparently, the drawings in the following description show only some of the embodiments of the present application, and those of ordinary skill in the art may still derive other drawings from these drawings without creative efforts.

For a better understanding of the technical solutions of the present application, the following describes in detail the embodiments of the present application with reference to the accompanying drawings.

Apparently, the described embodiments are merely some rather than all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments derived by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

The terms used in the embodiments of the present application are intended only to describe specific embodiments and are not intended to limit the present application. The singular forms of "a/an", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly implies otherwise.

It should be understood that the term "and/or" used herein merely describes an association relationship between associated objects, and indicates that three types of relationships may exist. For example, A and/or B may indicate that A exists alone, both A and B exist, or B exists alone. In addition, the character "/" used herein generally indicates that the associated objects are in an "or" relationship.

It should be noted that terms such as "upper", "lower", "left", and "right" described in the embodiments of the present application indicate orientation from the angle shown in the drawings, and should not be construed as a limitation to the embodiments of the present application. In addition, in the context, it should also be understood that when it is mentioned that an element is connected to another element, the element may be directly connected to the another element, or indirectly connected to the another element by using an intermediate element.

Refer to <FIG>. <FIG> is a schematic diagram of a partial structure of an embodiment of a battery pack according to the present application. <FIG> is an exploded view of a firefighting fluid storage device in <FIG>. <FIG> is a schematic structural diagram of the firefighting fluid storage device in <FIG> in a first working state. <FIG> is a schematic structural diagram of the firefighting fluid storage device in <FIG> in a second working state. <FIG> is a schematic structural diagram of a driving member in <FIG>. <FIG> is a schematic structural diagram from another angle of view of <FIG>. <FIG> is a cross-sectional view of <FIG>. <FIG> is an enlarged view of a portion I in <FIG>.

An embodiment of the present application provides a battery pack A. As shown in <FIG>, the battery pack A includes a housing <NUM>, where the housing <NUM> includes an accommodating cavity <NUM>; and a battery module <NUM> disposed in the accommodating cavity <NUM> of the housing <NUM>. The battery module <NUM> includes a plurality of battery units <NUM>. Each of the battery units <NUM> includes an explosion-proof opening. The explosion-proof opening may be provided with an explosion-proof valve. When thermal runaway occurs with the battery unit <NUM>, a high-temperature and high-pressure heat flow is generated inside the battery unit <NUM>. The explosion-proof valve is configured to discharge the heat flow to reduce the risk of explosion of the battery unit <NUM>. When the heat flow is discharged via the explosion-proof valve, the high-temperature heat flow may cause an adjacent battery unit <NUM> to burn.

To reduce the risk of burning an adjacent battery unit <NUM> when thermal runaway occurs with a battery unit <NUM>, a spraying system is further disposed in the battery pack A in the present application, thereby reducing diffusion of a heat flow and improving the safety of the battery pack A. The spraying system includes a spraying pipeline <NUM> and a firefighting fluid storage device <NUM>. The spraying pipeline <NUM> communicates with the firefighting fluid storage device <NUM>. The firefighting fluid storage device <NUM> is configured to store a firefighting fluid. The spraying pipeline <NUM> is disposed corresponding to the explosion-proof opening.

When thermal runaway occurs with a battery unit <NUM> and a heat flow is discharged via the explosion-proof opening, the spraying pipeline <NUM> can form an opening under the action of the heat flow, such that the firefighting fluid in the spraying pipeline <NUM> is discharged via the opening, and the pressure in the spraying pipeline <NUM> is reduced. Therefore, the firefighting fluid in the firefighting fluid storage device <NUM> enters the spraying pipeline <NUM> and is discharged via the opening, to spray the battery unit <NUM>.

The firefighting liquid in the present application includes a fluoride liquid. The fluoride liquid can chemically react with the heat flow from the battery unit <NUM> after being sprayed out of the spraying pipeline <NUM> to absorb heat and prevent heat diffusion.

Specifically, as shown in <FIG>, the firefighting fluid storage device <NUM> includes a box body <NUM>. The box body <NUM> includes an inner cavity <NUM> and a fluid outlet <NUM>. The inner cavity <NUM> is configured to accommodate the firefighting fluid. The fluid outlet <NUM> communicates with the inner cavity <NUM> of the box body <NUM> and the spraying pipeline <NUM>, such that the firefighting fluid in the inner cavity <NUM> of the box body <NUM> can enter the spraying pipeline <NUM> via the fluid outlet <NUM>.

The firefighting fluid storage device <NUM> further includes a gas generation component <NUM>. The gas generation component <NUM> can generate a gas. The firefighting fluid moves toward the fluid outlet <NUM> under the action of the gas generated by the gas generation component <NUM>.

In the present application, when no thermal runaway occurs with the battery unit <NUM> in the battery pack A, the gas generation component <NUM> does not generate the gas, and the spraying pipeline <NUM> does not form the opening. When thermal runaway occurs with the battery unit <NUM> in the battery pack A and the heat flow is sprayed via the explosion-proof opening, the spraying pipeline <NUM> at this position can form the opening under the action of the heat flow, and the firefighting fluid in the spraying pipeline <NUM> can be discharged via the opening. In addition, the gas generation component <NUM> generates the gas. Under the action of the gas, the firefighting fluid in the inner cavity <NUM> of the box body <NUM> can be driven into the spraying pipeline <NUM> and sprayed via the opening of the spraying pipeline <NUM>, to prevent heat diffusion.

The firefighting fluid storage device <NUM> does not need to be provided with a gas storage component. This helps reduce the volume of the firefighting fluid storage device <NUM> and increase energy density of the battery pack A. This also helps increase the volume of the firefighting fluid in the inner cavity <NUM> of the box body <NUM>, to improve a volume utilization of the box body <NUM>. In addition, when the firefighting fluid storage device <NUM> is provided with the gas generation component <NUM> and the gas generation component <NUM> does not generate the gas, there is no high-pressure gas in the inner cavity <NUM> of the box body <NUM>, to prevent gas leakage caused by excessively high gas pressure in the box body <NUM>, and avoid low safety caused by the excessively high pressure in the inner cavity <NUM> of the box body <NUM>.

The gas generation component <NUM> is a gas generation component commonly used in the prior art, in which there are gas generation substances. After the gas generation substances are mixed, the gas can be released, and the released gas should be an incombustible gas, for example, an inert gas such as nitrogen. For a specific structure of the gas generation component <NUM>, refer to the prior art.

In addition, the firefighting fluid storage device <NUM> in the present application can be used in the spraying system of the battery pack A and can also be used in other scenarios.

Specifically, the gas generation component <NUM> is detachably connected to the box body <NUM>. This facilitates disassembly and maintenance when the gas generation component <NUM> fails. As shown in <FIG>, the gas generation component <NUM> is detachably connected to the box body <NUM> by using a fastener <NUM>.

To prevent gas leakage at the gas generation component <NUM>, a sealing ring <NUM> is further disposed at a connection between the gas generation component <NUM> and the box body <NUM>, to improve sealing performance of the box body <NUM>.

In a possible design, the firefighting fluid storage device <NUM> further includes a driving member <NUM>. The driving member <NUM> is located in the inner cavity <NUM> of the box body <NUM>. When the gas generation component <NUM> releases the gas, the driving member <NUM> is configured to drive the firefighting fluid to move toward the fluid outlet <NUM>, to help the firefighting fluid to be discharged via the fluid outlet <NUM>, enter the spraying pipeline <NUM>, and be discharged via the opening of the spraying pipeline <NUM>.

In this embodiment, by disposing the driving member <NUM> in the firefighting fluid storage device <NUM>, when the gas generation component <NUM> releases the gas, the firefighting fluid can be driven by the driving member <NUM>, to help the firefighting fluid to move toward the fluid outlet <NUM>, and improve the accuracy of the flow of the firefighting fluid.

In a possible design, as shown in <FIG>, the driving member <NUM> includes a mounting portion <NUM> and a deformable portion <NUM>. The mounting portion <NUM> is connected to the box body <NUM>, such that the driving member <NUM> is mounted to the box body <NUM>. The deformable portion <NUM> is a flexible member and is deformable under pressure.

The deformable portion <NUM> may be made of nylon, can isolate the liquid and gas, and is deformable. In this embodiment, the deformation of the deformable portion <NUM> includes a change in the shape of the deformable portion <NUM>. When the deformable portion <NUM> includes an elastic structure, the deformation in this embodiment may include elastic deformation. To be specific, a wall surface of the deformable portion <NUM> is stretched or compressed. When the deformable portion <NUM> includes an inelastic structure, the deformation in this embodiment is the change in the shape of the deformable portion <NUM> surrounded by a flexible material, and the wall surface of the deformable portion <NUM> is not stretched or compressed, or an amount of stretch (or an amount of compression) can be ignored.

Specifically, as shown in <FIG> and <FIG>, the deformable portion <NUM> separates the inner cavity <NUM> of the box body <NUM> into a first cavity <NUM> and a second cavity <NUM>. The first cavity <NUM> does not communicate with the second cavity <NUM>. The first cavity <NUM> is configured to accommodate the firefighting fluid, and the second cavity <NUM> is configured to accommodate the gas generated by the gas generation component <NUM>. The first cavity <NUM> includes a first side wall 118a, and the second cavity <NUM> includes a second side wall 119a. The fluid outlet <NUM> is disposed on the first side wall 118a, and the gas generation component <NUM> is disposed on the second side wall 119a.

In this embodiment, the deformable portion <NUM> of the driving member <NUM> serves as a structure that separates the first cavity <NUM> and the second cavity <NUM>. Therefore, when the deformable portion <NUM> is deformed, the volumes of the first cavity <NUM> and the second cavity <NUM> can be changed. When the volume of the first cavity <NUM> is reduced, the firefighting fluid can be driven into the spraying pipeline <NUM> via the fluid outlet <NUM>. When the volume of the first cavity <NUM> is increased, the volume of the firefighting fluid can be increased. When the fluid outlet <NUM> and the gas generation component <NUM> are respectively located on the first side wall 118a and the second side wall 119a, the firefighting fluid can be quickly discharged via the fluid outlet <NUM>, and the sensitivity of the spraying system is improved.

In a possible design, as shown in <FIG>, the first side wall 118a and the second side wall 119a are disposed opposite each other. To be specific, the fluid outlet <NUM> and the gas generation component <NUM> are disposed opposite each other. This can further help the firefighting fluid to be quickly discharged via the fluid outlet <NUM>.

Specifically, as shown in <FIG>, the wall surface of the deformable portion <NUM> encircles a third cavity <NUM>. The third cavity <NUM> is configured to accommodate the firefighting fluid or gas. In a working process of the deformable portion <NUM>, when the pressure on both sides of the deformable portion <NUM> changes, the status of the deformable portion <NUM> also changes. In a plurality of deformed states, the deformable portion <NUM> includes at least a first deformed state shown in <FIG> and a second deformed state shown in <FIG>.

As shown in <FIG>, when the deformable portion <NUM> is in the second deformed state, there is a second preset distance between the deformable portion <NUM> and the gas generation component <NUM> in a length direction X. The second preset distance makes the deformable portion <NUM> not in contact with the gas generation component <NUM>, such that the gas generation component <NUM> can release the gas. The second preset distance is relatively small. In other words, the deformable portion <NUM> is close to the gas generation component <NUM>, such that the volume and gas pressure of the second cavity <NUM> is relatively small, and the volume of the first cavity <NUM> is relatively large. In this way, the firefighting fluid storage device <NUM> can be in a liquid filling state. To be specific, the firefighting fluid can enter the first cavity <NUM> via a fluid inlet, and as hydraulic pressure increases, the deformable portion <NUM> can be promoted to be deformed toward the second side wall 119a. In this case, the third cavity <NUM> of the deformable portion <NUM> faces the first cavity <NUM>, and can be used to store the firefighting fluid, such that the firefighting fluid can nearly fill the entire inner cavity <NUM> of the box body <NUM>, to increase the volume of the firefighting fluid stored in the box body <NUM>.

As shown in <FIG>, when the gas generation component <NUM> is triggered to release the gas, the gas pressure in the second cavity <NUM> gradually increases, thereby driving the deformable portion <NUM> to deform toward the first side wall 118a, and driving the firefighting fluid in the first cavity <NUM> to be discharged via the fluid outlet <NUM>. As the pressure in the second cavity <NUM> gradually increases, in a length direction X, a first preset distance between the deformable portion <NUM> and the first side wall 118a gradually reduces. As the firefighting fluid is discharged via the fluid outlet <NUM> and the gas generation component <NUM> releases the gas, at least part of the deformable portion <NUM> can abut against the first side wall 118a. In this case, the third cavity <NUM> of the deformable portion <NUM> faces the second cavity <NUM> and can be used to store the gas. This helps the firefighting fluid in the first cavity <NUM> to be completely discharged and improve a utilization of the firefighting fluid.

Therefore, in this embodiment, the driving member <NUM> can reduce the volume of the firefighting fluid storage device, increase the utilization of the firefighting fluid storage device, and increase the energy density of the battery pack A while the sufficient firefighting fluid is discharged to the spraying pipeline <NUM>.

In addition, as shown in <FIG>, in a height direction Z, the mounting portion <NUM> includes an upper end 121a and a lower end 121b disposed opposite each other. In the mounting portion <NUM>, the upper end 121a and the lower end 121b are connected to the box body <NUM>. In a specific embodiment, the upper end 121a is close to the first side wall 118a, and the lower end 121b is close to the second side wall 112c. In this case, the mounting portion <NUM> is inclined in the height direction Z. In another specific embodiment, the upper end 121a is close to the second side wall 112c, and the lower end 121b is close to the first side wall 118a. In this case, the mounting portion <NUM> is inclined in the height direction Z.

In this embodiment, compared with that the mounting portion <NUM> is disposed along a vertical plane or a horizontal plane, when the mounting portion <NUM> is inclined, the deformable portion <NUM> can nearly fit the first side wall 118a or the second side wall 112c after being deformed. This can increase the volume of the firefighting fluid stored in the box body <NUM>, and helps the firefighting fluid in the inner cavity <NUM> of the box body <NUM> to be completely discharged, to improve the utilization of the firefighting fluid storage device and the energy density of the battery pack A.

Specifically, as shown in <FIG>, the box body <NUM> includes a rectangular structure, including a top wall <NUM>, a bottom wall <NUM>, and four side walls. A first bent portion <NUM> is formed at a position where the top wall <NUM> is connected to the first side wall 118a of the first cavity <NUM>. A second bent portion <NUM> is formed at a position where the bottom wall <NUM> is connected to the second side wall 119a of the second cavity <NUM>. The first bent portion <NUM> and the second bent portion <NUM> are on a diagonal of the box body <NUM>. Therefore, in the height direction Z, one end of the mounting portion <NUM> is fixedly connected to the first bent portion <NUM>, and the other end is fixedly connected to the second bent portion <NUM>. In other words, the mounting portion <NUM> is disposed along the diagonal of the box body <NUM>. This further increases the volume of the firefighting fluid stored in the box body <NUM>, and helps the firefighting fluid in the inner cavity <NUM> of the box body <NUM> to be completely discharged, to improve the utilization of the firefighting fluid storage device and the energy density of the battery pack A.

It should be noted that, as shown in <FIG>, the gas generation component <NUM> is disposed on the second side wall 119a. Therefore, the gas generation component <NUM> occupies part of the space of the second cavity <NUM>. Therefore, there is a specific distance between the second bent portion <NUM> and the second side wall 119a.

In the foregoing embodiments, the box body <NUM> includes a first box body <NUM> and a second box body <NUM> that are separate from each other. The first box body <NUM> and the second box body <NUM> both include a structure similar to a triangular prism. The first box body <NUM> and the second box body <NUM> are joined to form the rectangular box body <NUM>. As shown in <FIG>, the mounting portion <NUM> is tightly sandwiched between the first box body <NUM> and the second box body <NUM>. In this way, the driving member <NUM> is mounted into the box body <NUM>.

The first bent portion <NUM> is a part of the first box body <NUM>, and the first bent portion <NUM> is an end of the first box body <NUM>. Therefore, the first bent portion <NUM> is butted with a corresponding end of the second box body <NUM>. The second bent portion <NUM> is a part of the second box body <NUM>, and the second bent portion <NUM> is an end of the second box body <NUM>. Therefore, the second bent portion <NUM> is butted with a corresponding end of the first box body <NUM>.

As shown in <FIG>, the other ends of the first box body <NUM> and the second box body <NUM> are also butted, such that the first box body <NUM> is fixedly connected to the second box body <NUM> to form the complete box body <NUM>. The mounting portion <NUM> of the driving member <NUM> is located between the ends of the first box body <NUM> and the second box body <NUM>, such that the mounting portion <NUM> is tightly sandwiched between the first box body <NUM> and the second box body <NUM>.

In this embodiment, the box body <NUM> separated into two parts can facilitate the mounting of the driving member <NUM>. A sealant <NUM> is further disposed between the first box body <NUM> and the mounting portion <NUM>, and between the second box body <NUM> and the mounting portion <NUM>. The sealant <NUM> improves the mounting reliability and sealing performance of the mounting portion <NUM> and the box body <NUM>, and the mounting portion <NUM> remains stationary during the deformation of the deformable portion <NUM>.

In the driving member <NUM>, the deformable portion <NUM> is a flexible and deformable structure, and the mounting portion <NUM> is a rigid structure, to improve the mounting reliability of the mounting portion <NUM> and the box body <NUM>.

It should be noted that the first cavity <NUM> is not an inner cavity of the first box body <NUM>, and the second cavity <NUM> is not an inner cavity of the second box body <NUM>. The inner cavity of the first box body <NUM> and that of the second box body <NUM> each is half of the inner cavity <NUM> of the rectangular box body <NUM>. The shape and size of the first cavity <NUM> and the second cavity <NUM> continuously change as the deformable portion <NUM> deforms, and the two cavities approximately form the internal cavity <NUM> of the box body <NUM>.

In addition, a recess portion 111a is disposed on a side of the first box body <NUM> being close to the fluid outlet <NUM>, to help the firefighting fluid to be discharged via the fluid outlet <NUM>. A holder 112a is disposed on an outer side wall of the second box body <NUM>. The box body <NUM> is fastened into the accommodating cavity <NUM> of the housing <NUM> of the battery pack A through the holder 112a, and the holder 112a is disposed on the second side wall 119a.

In the foregoing embodiments, the firefighting fluid storage device <NUM> includes a gas generation assembly <NUM>. The gas generation assembly <NUM> includes the gas generation component <NUM> and an ignition wire <NUM>. The ignition wire <NUM> is connected to the gas generation component <NUM>. When a trigger condition is met, the ignition wire <NUM> is configured to energize the gas generation component <NUM> to drive the gas generation component <NUM> to release the gas. Specifically, the trigger condition is that thermal runaway occurs with any battery unit <NUM> in the battery pack A. When a monitoring device of the battery pack A detects that thermal runaway occurs with the battery unit <NUM>, a control device can send a control signal to the ignition wire <NUM>, and the ignition wire <NUM> energizes the gas generation component <NUM>, so as to discharge the firefighting fluid.

Alternatively, a control circuit including a temperature control fuse is disposed inside the gas generation component <NUM> in the gas generation assembly <NUM>. When thermal runaway occurs with any battery unit <NUM> in the battery pack A, a temperature in the battery pack A increases. When a temperature of the temperature control fuse reaches a preset temperature, the temperature control fuse is blown, and the control circuit controls the gas generation component <NUM> to release the gas. The preset temperature is set to a lowest temperature in the battery pack A when thermal runaway occurs with a battery unit <NUM>, so as to discharge the firefighting fluid in time.

An embodiment of the present application further provides an electric vehicle, including the battery pack A.

Claim 1:
A firefighting fluid storage device (<NUM>), characterized by:
a box body (<NUM>), wherein the box body (<NUM>) comprises an inner cavity (<NUM>) and a fluid outlet (<NUM>), the inner cavity (<NUM>) is configured to accommodate a firefighting fluid, and the fluid outlet (<NUM>) communicates with the inner cavity (<NUM>); and
a gas generation component (<NUM>), wherein the gas generation component (<NUM>) is mounted to the box body (<NUM>) and configured to release a gas to the inner cavity (<NUM>),
wherein when the gas generation component (<NUM>) releases the gas, the firefighting fluid moves toward the fluid outlet (<NUM>) under an action of the gas;
the firefighting fluid storage device (<NUM>) further comprises a driving member (<NUM>), and the driving member (<NUM>) is located in the inner cavity (<NUM>); and
when the gas generation component (<NUM>) releases the gas, the driving member (<NUM>) drives the firefighting fluid to move toward the fluid outlet (<NUM>) under the action of the gas;
the driving member (<NUM>) comprises a mounting portion (<NUM>) and a deformable portion (<NUM>), the deformable portion (<NUM>) is mounted to the mounting portion (<NUM>), and the mounting portion (<NUM>) is connected to the box body (<NUM>); and
the deformable portion (<NUM>) is a flexible member and is deformable under pressure;
the deformable portion (<NUM>) separates the inner cavity (<NUM>) into a first cavity (<NUM>) and a second cavity (<NUM>), the first cavity (<NUM>) is configured to accommodate the firefighting fluid, and the second cavity (<NUM>) is configured to accommodate the gas generated by the gas generation component (<NUM>), and when the deformable portion (<NUM>) is deformed, volumes of the first cavity (<NUM>) and the second cavity (<NUM>) can be changed.