Fire extinguishing device, energy storage device and power utilization device

Abstract

The utility model relates to the field of fire fighting, and provides a fire extinguishing device, an energy storage device and a power utilization device.The fire extinguishing device comprises a shell, the shell comprises a first wall and side walls, the side walls define a containing cavity with an opening, the opening covers the first wall, the first wall is provided with a first through hole and a second through hole, and the first through hole is used for spraying aerosol; the barrier is arranged on one side, far away from the accommodating cavity, of the first wall; the slow opening part is connected to the blocking part to slow down movement of the blocking part in the thickness direction of the first wall. Wherein the first through hole is at least partially formed outside the orthographic projection of the blocking part on the first wall, and the second through hole is formed inside the orthographic projection of the blocking part on the first wall, so that the reliability of the fire extinguishing device is improved.

Description

Technical Field

[0001] The present application relates to the field of fire protection, and more specifically, to a fire extinguishing device, an energy storage device and an electrical device. Background Art

[0002] With the expansion of power battery applications, the safety of power battery use has gradually received attention. In order to reduce the risk of thermal runaway in energy storage devices, power-consuming devices, etc. that use power batteries, consideration is given to installing fire extinguishing devices in the energy storage devices and power-consuming devices. However, the fire extinguishing devices currently used have certain problems with the nature of the fire extinguishing agents and the spraying methods, which may cause damage to the energy storage devices and power-consuming devices.

[0003] Therefore, how to reduce the risk of using fire extinguishing devices has become an urgent problem to be solved. Utility Model Content

[0004] The embodiments of the present application provide a fire extinguishing device, an energy storage device, and an electricity-consuming device, which can reduce the risk of using the fire extinguishing device.

[0005] In a first aspect, the present application provides a fire extinguishing device, comprising: a shell, the shell comprising a first wall and a side wall, the side wall comprising a accommodating cavity having an opening, the first wall covering the opening, the first wall being provided with a first through hole and a second through hole, the first through hole being used for aerosol spraying; a blocking portion, the blocking portion being arranged on a side of the first wall away from the accommodating cavity; a slow-start portion, the slow-start portion being connected to the blocking portion to slow down the movement of the blocking portion along the thickness direction of the first wall; wherein the first through hole is at least partially arranged outside the orthographic projection of the blocking portion on the first wall, and the second through hole is arranged within the orthographic projection of the blocking portion on the first wall.

[0006] In the technical solution provided by the embodiment of the present application, the first through hole is used to spray aerosol, and the second through hole cooperates with the blocking part to maintain the pressure of the fire extinguishing device. When the internal pressure of the fire extinguishing device is too high, the slow-opening part cooperates with the blocking part to slowly open the second through hole to release the pressure. Since the movement of the blocking part along the thickness direction of the first wall is slowed down, the opening speed of the second through hole is slowed down, and the possibility of the high-temperature gas and smoke generated by the aerosol generation reaction being violently sprayed through the second through hole is reduced, thereby reducing the use risk of the fire extinguishing device.

[0007] In some embodiments, the first wall is also provided with a third through hole, the slow-opening portion includes a transmission mechanism and a first matching portion, one end of the transmission mechanism is fixedly connected to the blocking portion, the transmission mechanism extends through the third through hole toward the accommodating cavity, and the first matching portion is arranged on the peripheral side of the transmission mechanism; wherein the transmission mechanism cooperates with the first matching portion to slow down the movement of the blocking portion along the thickness direction of the first wall.

[0008] In some embodiments, a first limiting portion is provided at the other end of the transmission mechanism, and the orthographic projection of the first limiting portion toward the first wall at least partially covers the orthographic projection of the third through hole toward the first wall so as to limit the movement of the transmission mechanism away from the aerosol generating portion along the thickness direction of the first wall when the first limiting portion abuts against the first wall.

[0009] In the technical solution provided in the embodiment of the present application, a first limiting portion is provided at the other end of the transmission mechanism. When the first limiting portion abuts against the first wall, it limits the movement of the transmission mechanism away from the aerosol generating portion along the thickness direction of the first wall, thereby limiting the movement amplitude of the slow-start portion and reducing the possibility of the blocking portion detaching from the fire extinguishing device.

[0010] In some embodiments, the fire extinguishing device also includes: a partition, which is arranged between the aerosol generating part and the first wall; the partition is provided with a fourth through hole, and at least part of the orthographic projection of the first through hole toward the first wall does not overlap with the orthographic projection of the fourth through hole toward the first wall.

[0011] In the technical solution provided in the embodiment of the present application, since the redox reaction of the aerosol generating part may produce high-temperature gas when generating aerosol, the high-temperature gas generated by the aerosol generating part is blocked by the partition through the fourth through hole and the first through hole which are staggered in the thickness direction of the first wall, and the aerosol reaches the first through hole through the fourth through hole, thereby reducing the amount of combustion components in the aerosol sprayed from the first through hole and improving the reliability of the fire extinguishing device.

[0012] In some embodiments, there is no overlapping area between the orthographic projections of the first through hole and the fourth through hole toward the first wall.

[0013] In some embodiments, the transmission mechanism includes a transmission shaft and a second matching portion, wherein the second matching portion is connected to the transmission shaft; wherein the first matching portion matches with the second matching portion to enable the transmission mechanism to slow down the movement of the blocking portion along the thickness direction of the first wall.

[0014] In the technical solution provided in the embodiment of the present application, the transmission mechanism cooperates with the first matching part through the second matching part so that the transmission mechanism slows down the movement of the blocking part along the thickness direction of the first wall, which can reduce the complexity of the shell design and is beneficial to the preparation of the shell.

[0015] In some embodiments, the second mating portion includes a first thread arranged on the outer circumference of the transmission shaft, and the first mating portion includes a second thread arranged on the inner wall of the first through hole, wherein the first thread cooperates with the second thread to enable the transmission mechanism to slow down the movement of the blocking portion along the thickness direction of the first wall.

[0016] In the technical solution provided in the embodiment of the present application, the transmission mechanism and the first wall cooperate through threads to convert the linear motion along the thickness direction of the first wall into the spiral motion along the thickness direction of the first wall, thereby slowing down the opening speed of the blocking part, thereby reducing the possibility of excessive spraying pressure caused by the second through hole opening too fast and the possibility of insufficient spraying pressure caused by too fast pressure reduction.

[0017] In some embodiments, the second mating portion includes a third thread arranged on the outer circumference of the transmission shaft, the partition is provided with a fifth through hole, the transmission mechanism passes through the fifth through hole, and the first mating portion includes a fourth thread, and the fourth thread is arranged on the inner wall of the fifth through hole, wherein the third thread cooperates with the fourth thread to enable the transmission mechanism to slow down the movement of the blocking portion along the thickness direction of the first wall.

[0018] In the technical solution provided in the embodiment of the present application, a fourth thread is arranged on the inner wall of the fifth through hole of the partition, and a third thread is arranged on the outer periphery of the transmission shaft. The third thread and the fourth thread cooperate to convert the linear motion along the thickness direction of the first wall into the spiral motion along the thickness direction of the first wall, thereby slowing down the opening speed of the blocking part, thereby reducing the possibility of excessive spraying pressure caused by too fast opening speed of the second through hole and the possibility of insufficient spraying pressure caused by too fast pressure reduction.

[0019] In some embodiments, a connecting portion is also provided on the outer periphery of the transmission shaft, and the connecting portion is provided between the first wall and the partition. The fire extinguishing device also includes: a first elastic member, one end of the first elastic member is connected to a side of the connecting portion facing the aerosol generating portion, and the other end of the first elastic member is connected to a side of the partition facing the first wall.

[0020] In the technical solution provided in the embodiment of the present application, when the transmission mechanism moves in a direction away from the aerosol generating part, the first elastic member is stretched, and the generated elastic stress gradually balances with the internal pressure. After the internal pressure is released, the first elastic member contracts to reset the blocking part, thereby further maintaining the spraying pressure of the fire extinguishing device. When the internal pressure of the fire extinguishing device is too low, the blocking part closes the second through hole, so that spraying is only carried out through the first through hole, thereby increasing the spraying pressure.

[0021] In some embodiments, a second limiting portion is provided at the other end of the transmission mechanism, and the second limiting portion is provided on the side of the partition facing the aerosol generating portion; wherein the orthographic projection of the second limiting portion toward the first wall at least partially covers the orthographic projection of the fifth through hole toward the first wall so as to limit the movement of the transmission mechanism away from the aerosol generating portion along the thickness direction of the first wall when the second limiting portion abuts against the partition.

[0022] In the technical solution provided in the embodiment of the present application, a second limiting portion is provided at the other end of the transmission mechanism. When the second limiting portion abuts against the partition, it limits the movement of the transmission mechanism away from the aerosol generating portion along the thickness direction of the first wall, thereby limiting the movement amplitude of the slow-start portion and reducing the possibility of the blocking portion detaching from the fire extinguishing device.

[0023] In some embodiments, the fire extinguishing device further includes: a second elastic member, one end of the second elastic member is connected to a side of the second limiting portion facing the first wall, and the other end of the second elastic member is connected to a side of the partition facing the aerosol generating portion.

[0024] In the technical solution provided in the embodiment of the present application, when the transmission mechanism moves in a direction away from the aerosol generating part, the second elastic part is compressed, and the generated elastic stress gradually balances with the internal pressure. After the internal pressure is released, the first elastic part rebounds, and the blocking part can be reset to further maintain the spraying pressure of the fire extinguishing device. When the internal pressure of the fire extinguishing device is too low, the blocking part closes the second through hole, so that spraying is only carried out through the first through hole, thereby increasing the spraying pressure.

[0025] In some embodiments, a protruding structure is provided on the side of the blocking portion facing the aerosol generating portion, the protruding structure passes through the third through hole, a groove is provided on the side of the protruding structure facing the aerosol generating portion, and the transmission mechanism is fixedly connected to the bottom wall of the groove; wherein, a sixth through hole is provided on the bottom wall of the groove, the sixth through hole passes through the blocking portion and the bottom wall of the groove along the thickness direction of the blocking portion, the transmission mechanism is provided with spiral blades distributed along the thickness direction of the first wall, the orthographic projection of the spiral blades toward the first wall is located within the range of the orthographic projection of the groove toward the first wall, and the orthographic projection of the sixth through hole toward the first wall is located within the range of the orthographic projection of the spiral blades toward the first wall.

[0026] In the technical solution provided in the embodiment of the present application, a protrusion structure is provided on the side of the blocking part facing the aerosol generating part, the protrusion structure passes through the third through hole, a groove is provided on the side of the protrusion structure facing the aerosol generating part, and a sixth through hole is provided on the bottom wall of the groove. When the aerosol generating part reacts, the generated gas enters the groove and is guided to the sixth through hole through the groove flow channel. In this process, the circulating gas pushes the spiral blades of the transmission mechanism, thereby pushing the blocking part to rotate and move away from the second through hole along the thickness direction of the first wall, thereby achieving slow pressure relief.

[0027] In some embodiments, a diameter of the first through hole is greater than a diameter of the second through hole.

[0028] In the technical solution provided in the embodiment of the present application, the diameter of the first through hole is larger than the diameter of the second through hole, so that the first spray hole plays a major spraying role and the second through hole plays a major pressure relief role, thereby reducing the spraying pressure of the fire extinguishing device and improving the reliability of the use of the fire extinguishing device.

[0029] In some embodiments, the first through hole is farther away from the center of the first wall than the second through hole.

[0030] In a second aspect, an energy storage device is provided, comprising the fire extinguishing device described in the first aspect or any one embodiment of the first aspect.

[0031] In a third aspect, an electrical device is provided, comprising the fire extinguishing device described in the first aspect or any one embodiment of the first aspect.

[0032] In some embodiments, the electrical device is a vehicle, a ship, or a spacecraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the external body of an energy storage device disclosed in one embodiment of the present application is shown;

[0034] Figure 2 A schematic diagram of the internal structure of an energy storage device disclosed in one embodiment of the present application is shown;

[0035] Figure 3 is a top view of a fire extinguishing device provided in a certain embodiment of the present application;

[0036] Figure 4 is a schematic AA cross-sectional view of a fire extinguishing device provided in a certain embodiment of the present application;

[0037] Figure 5 This application Figure 4 An enlarged view of the fire extinguishing device at point B is provided;

[0038] Figure 6 is a schematic AA cross-sectional view of a fire extinguishing device provided in a certain embodiment of the present application;

[0039] Figure 7 This application Figure 6 An enlarged view of the fire extinguishing device at point C is provided;

[0040] Figure 8 is a schematic AA cross-sectional view of a fire extinguishing device provided in a certain embodiment of the present application;

[0041] Fig. 9 This application Figure 8 An enlarged view of the fire extinguishing device at point D is provided;

[0042] Fig.10is a schematic AA cross-sectional view of a fire extinguishing device provided in a certain embodiment of the present application;

[0043] Fig.11 This application Fig.10 An enlarged view of the fire extinguishing device at point E is provided;

[0044] Fig.12 is a schematic AA cross-sectional view of a fire extinguishing device provided in a certain embodiment of the present application;

[0045] Fig.13 This application Fig.12 An enlarged view of point F of the fire extinguishing device provided;

[0046] Fig.14 is a schematic AA cross-sectional view of a fire extinguishing device provided in a certain embodiment of the present application;

[0047] Fig.15 This application Fig.14 An enlarged view of the fire extinguishing device at G is provided;

[0048] Fig.16 is a top view of a fire extinguishing device provided in a certain embodiment of the present application;

[0049] Fig.17 is a schematic AA cross-sectional view of a fire extinguishing device provided in a certain embodiment of the present application;

[0050] Fig.18 This application Fig.17 An enlarged view of the fire extinguishing device at point H is provided;

[0051] Reference numerals:

[0052] 1-energy storage device; 2-fire extinguishing device; 10-battery compartment; 20-main control module; 30-thermal management module; 40-electrical module; 50-confluence module; 60-top wall; 21-shell; 22-aerosol generating part; 23-slow-start part; 24-partition; 31-first matching part; 211-first wall; 212-side wall; 230-blocking part; 232-transmission mechanism; 233-first limiting part; 234-second limiting part; 235-connecting part; 241 - fourth through hole; 242 - fifth through hole; 243 - fourth thread; 251 - first elastic member; 252 - second elastic member; 311 - second thread; 2111 - first through hole; 2112 - second through hole; 2113 - third through hole; 2311 - sixth through hole; 2312 - raised structure; 2313 - groove; 2321 - second matching part; 2322 - transmission shaft; 2323 - first thread; 2324 - third thread; 2325 - spiral blade;

[0053] In the drawings, the drawings are not drawn to scale. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0055] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0056] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0057] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0058] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0059] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0060] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0061] The term "multiple" as used in the present application refers to more than two (including two). Similarly, the term "multiple groups" refers to more than two groups (including two groups), and the term "multiple sheets" refers to more than two sheets (including two sheets).

[0062] Unless otherwise specified, all embodiments and optional embodiments of the present application can be combined with each other to form a new technical solution.

[0063] An energy storage device provided in an embodiment of the present application may include one or more battery clusters to increase the voltage and capacity of the energy storage device. The battery cluster may include multiple battery devices, and the multiple battery devices are connected in series through a busbar to increase the voltage of the energy storage device. When the energy storage device includes multiple battery clusters, the multiple battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0064] The energy storage device can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems or temporary power supply systems. The energy storage device can store electrical energy as needed and output electrical energy at an appropriate time. For example, the energy storage device can store electrical energy during low power consumption and provide electrical energy to relevant users or electrical equipment during peak power consumption. The energy storage system provided in the embodiment of the present application can be any power system that requires the use of an energy storage device.

[0065] In some embodiments, the energy storage device is an energy storage device or an energy storage cabinet.

[0066] In some embodiments, the energy storage device may include a cabinet and one or more battery clusters, wherein the battery clusters are housed in the cabinet.

[0067] In some embodiments, the energy storage device may include modules such as a thermal management module, a main control module, a master control module, a power distribution module, and a fire protection module.

[0068] As an example, the main control module can be used as a battery management unit of a battery cluster to monitor and manage the battery cluster. The main control module can monitor information such as the current, voltage, power or temperature of the battery cluster. For example, the charging and discharging current and voltage of the battery cluster can be controlled. The main control module includes modules such as an auxiliary battery management unit and a fusion switch.

[0069] As an example, the master control module can be used as a battery management unit of the energy storage device to monitor and manage the energy storage device. The master control module can monitor information such as the current, voltage, power, state of charge or temperature of the energy storage device. For example, the charge and discharge current, voltage, etc. of the energy storage device can be controlled. As an example, the master control module includes modules such as an insulation monitoring module, a main battery management unit, an Ethernet and optical fiber conversion module, etc.

[0070] As an example, the fire protection module includes a control panel, a detector, an alarm device, a fire extinguishing device, etc., which are used to detect, alarm or extinguish fire in the energy storage system.

[0071] As an example, the power distribution device may be used to distribute power to the power modules of the energy storage device.

[0072] The battery device mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells, and the plurality of battery cells are connected in series, in parallel or in mixed connection through a busbar.

[0073] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0074] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited in the embodiments of the present application.

[0075] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells.

[0076] As an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells by a cable tie.

[0077] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case.

[0078] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0079] As an example, the battery cell assembly may also be housed in the case by directly fixing a plurality of battery cells to the case.

[0080] As an example, the box may include a first box and a second box. The first box and the second box are buckled together to form a closed space inside the box to accommodate the battery cell assembly. The closed here means covered or closed, which can be sealed or unsealed. The first box can be a top cover or a bottom plate.

[0081] As an example, the box body may include a top cover, a frame and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that a closed space is formed inside the box body to accommodate the battery cell assembly.

[0082] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0083] With the expansion of power battery applications, the safety of power battery use has gradually received attention. In order to reduce the risk of thermal runaway in energy storage devices, power-consuming devices, etc. that use power batteries, consideration is given to installing fire extinguishing devices in the energy storage devices and power-consuming devices. However, the fire extinguishing devices currently used have certain problems with the nature of the fire extinguishing agents and the spraying methods, which may cause damage to the energy storage devices and power-consuming devices.

[0084] Therefore, how to reduce the risk of using fire extinguishing devices has become an urgent problem to be solved.

[0085] The present application provides a fire extinguishing device, an energy storage device and an electrical device, wherein the fire extinguishing device comprises: a shell, wherein the shell comprises a first wall and a side wall, wherein the side wall encloses a receiving cavity having an opening, wherein the first wall cover is arranged on the opening, wherein the first wall is provided with a first through hole and a second through hole, wherein the first through hole is used for aerosol spraying; a blocking portion, wherein the blocking portion is arranged on a side of the first wall away from the receiving cavity; a slow-start portion, wherein the slow-start portion is connected to the blocking portion to slow down the movement of the blocking portion along the thickness direction of the first wall; wherein the first through hole is at least partially arranged outside the orthographic projection of the blocking portion on the first wall, and the second through hole is arranged within the orthographic projection of the blocking portion on the first wall.

[0086] In the embodiment of the present application, the aerosol is sprayed through the first through hole, and the second through hole cooperates with the slow-opening part to maintain the pressure of the fire extinguishing device. When the internal pressure of the fire extinguishing device is too high, the transmission mechanism of the slow-opening part cooperates with the blocking part to slowly open the second through hole to release the pressure. Since the transmission mechanism cooperates with the first matching part to slow down the movement of the blocking part along the thickness direction of the first wall, the opening speed of the second through hole is slowed down, and the possibility of the high-temperature gas and smoke generated by the aerosol generation reaction being violently sprayed through the second through hole is reduced, thereby reducing the use risk of the fire extinguishing device.

[0087] For the convenience of explanation, the following embodiments are combined Figure 1 and Figure 2 The scenarios to which the embodiments of the present application are applicable are given as examples.

[0088] For example, Figure 1 A schematic diagram of the external body of an energy storage device disclosed in one embodiment of the present application is shown; Figure 2 A schematic diagram of the internal structure of an energy storage device disclosed in one embodiment of the present application is shown.

[0089] The embodiment of the present application exemplarily provides a schematic diagram of an energy storage device applicable to a fire extinguishing device, but the embodiment of the present application is not limited thereto. For example, the fire extinguishing device may also be applicable to an electrical device.

[0090] The energy storage device 1 provided in the embodiment of the present application may include multiple battery compartments 10, and the multiple battery compartments 10 may accommodate multiple battery devices. Exemplarily, the battery compartment 10 may be provided with multiple battery device installation positions along the gravity direction to accommodate multiple battery devices, and the battery devices may be placed in or out of the battery device installation positions of the battery compartment 10 from the entrance, and the battery devices may be fixed by a locking mechanism after being installed in the battery device installation positions. The battery device installation positions may include two guide rails and two side walls arranged opposite to each other, the two guide rails are used to carry the battery devices, and the two guide rails are respectively arranged on the two side walls at the same height, and adjacent battery compartments 10 may share the same side wall.

[0091] The energy storage device 1 is provided with a plurality of battery compartments 10, and a common side wall can be provided between the plurality of battery compartments 10 to form a plurality of battery compartments 10, so that the battery device can be provided in the energy storage device 1, and no additional cabinet is required except for the box structure of the energy storage device 1.

[0092] Exemplarily, the shape of the energy storage device 1 may be a rectangular parallelepiped, but the embodiment of the present application is not limited thereto, and the energy storage device 1 may also be other shapes. In addition, in order to facilitate transportation and reduce transportation costs, the energy storage device 1 of the embodiment of the present application may be a container of standard size, for example, a 20-foot or 40-foot container may be used, but the embodiment of the present application is not limited thereto.

[0093] The energy storage device 1 may further include a main control module 20. As an example, the main control module may be used as a battery management unit of a battery cluster to monitor and manage the battery cluster. The main control module 20 may be used to accommodate a main control box, which is used to electrically connect the battery device in the battery compartment 10. The main control module 20 may monitor information such as the current, voltage, power or temperature of the battery cluster. For example, the charge and discharge current and voltage of the battery cluster may be controlled. The main control module includes modules such as an auxiliary battery management unit and a fusion switch.

[0094] The energy storage device 1 may further include a thermal management module 30, which may accommodate a thermal management component to perform thermal management on the energy storage device 1. For example, the energy storage device 1 may be heated or cooled. As an example, the thermal management module may include a liquid cooling unit, which provides cooling liquid for regulating the temperature of the battery cells to each battery device through a pipeline.

[0095] The energy storage device 1 may also include a fire protection module. For example, the fire protection module includes a control panel, a detector, an alarm device, a fire extinguishing device 2, etc., which is used to detect, alarm or extinguish a fire in the energy storage system. For example, the fire extinguishing device 2 may be installed in the battery compartment 10, but the embodiment of the present application is not limited to this.

[0096] The energy storage device 1 may further include an electrical module 40 . The electrical module 40 may include electrical components, for example, may include at least one of the following components: a distribution box, an inverter, a master control box, and a fan.

[0097] The energy storage device 1 may further include a confluence module 50, which may include a confluence component, which is used to be electrically connected to the main control module 20, etc. For example, the high-voltage line from the main control module 20 may be connected to the confluence component through the wire groove at the bottom of the box, such as the confluence component can realize parallel connection between multiple main control boxes.

[0098] The energy storage device 1 may also be provided with a top wall 60 , which is arranged at the top along the gravity direction, thereby providing certain protection for the entire energy storage device 1 .

[0099] The above is merely exemplary, and the energy storage device 1 may include more components than the above examples, or may omit some of the components in the above examples, which is not limited in the embodiments of the present application.

[0100] Combine the following Figures 3 to 5 A fire extinguishing device provided in one embodiment of the present application is described.

[0101] See also Figures 3 to 5 ,in, Figure 3 is a top view of a fire extinguishing device 2 provided in a certain embodiment of the present application; Figure 4 AA is a cross-sectional schematic diagram of a fire extinguishing device 2 provided in a certain embodiment of the present application; Figure 5 This application Figure 4 An enlarged view of point B of the fire extinguishing device 2 is provided.

[0102] like Figure 3-5The fire extinguishing device 2 shown in the figure may include a shell 21, the shell 21 includes a first wall 211 and a side wall 212, the first wall 211 may be arranged at one end of the shell 21, the side wall 212 surrounds a receiving cavity with an opening, the first wall 211 covers the opening, the first wall 211 is provided with a first through hole 2111 and a second through hole 2112, the first through hole 2111 is used for aerosol spraying; an aerosol generating part 22 may be arranged in the receiving cavity, the aerosol generating part 22 is used to generate The aerosol; a blocking portion 230, the blocking portion 230 is arranged on a side of the first wall 211 away from the accommodating cavity; a slow-opening portion 23, the slow-opening portion 23 is connected to the blocking portion 230 to slow down the movement of the blocking portion 230 along the thickness direction of the first wall 211; wherein the first through hole 2111 is at least partially arranged outside the orthographic projection of the blocking portion 230 on the first wall 211, and the second through hole 2112 is arranged within the orthographic projection of the blocking portion 230 on the first wall 211.

[0103] The slow-opening portion 23 may extend into the accommodating cavity through the third through hole 2113 , or may be disposed on a side of the first wall 211 away from the accommodating cavity, but the embodiment of the present application is not limited thereto.

[0104] The slow-opening portion 23 can be implemented in a variety of ways, such as an elastic member disposed between the blocking portion and the first wall, slowing down the movement of the blocking portion 230 by stretching the elastic member, or slowing down the movement of the blocking portion 230 by a threaded structure, but the embodiments of the present application are not limited thereto.

[0105] In the embodiment of the present application, the shape of the fire extinguishing device 2 is a cylinder as an illustration, but the embodiment of the present application is not limited to this. The shape of the fire extinguishing device 2 can be other shapes, for example, the shape of the fire extinguishing device 2 can be a rectangular parallelepiped, a hexagonal prism, etc.

[0106] The aerosol generating part 22 in the embodiment of the present application can be filled with an aerosol generating agent, which can produce an effective aerosol for fire extinguishing. The aerosol can be generated by a gas generating agent or by a gas generating agent and a fire extinguishing composition. A large amount of gas generated by the redox reaction of the gas generating agent ejects the effective fire extinguishing substance generated by itself and the fire extinguishing medium generated by the thermal decomposition of the fire extinguishing composition from the nozzle together. The effective fire extinguishing substance can capture the free radicals required for flame combustion, thereby hindering the spread of flames. The fire extinguishing composition plays the role of a chemical coolant because of its own sublimation, thermal decomposition or mutual endothermic chemical reaction, and achieves the effect of fire extinguishing through a variety of composite mechanisms. The aerosol fire extinguishing device 2 is more friendly to electrical devices than traditional dry powder fire extinguishers and wet fire extinguishers.

[0107] The gas-generating agent in the embodiment of the present application may be a solid particulate aerosol fire extinguishing agent, such as a potassium salt fire extinguishing agent. The gas-generating agent may also be other fire extinguishing agents, which is not limited in the embodiment of the present application.

[0108] The first wall 211 may be integrally formed with the side wall 212 , or the first wall 211 may cover the opening of the accommodating cavity surrounded by the side wall 212 and be welded to the side wall 212 . The embodiment of the present application does not limit the connection method between the first wall 211 and the side wall 212 .

[0109] When the aerosol generating part 22 reacts, the pressure inside the fire extinguishing device 2 may be too high, and the high-temperature gas generated by the redox reaction of the aerosol gas generating agent may be ejected through the first through hole 2111, causing damage to components or injuries to personnel. However, setting too many spray holes to reduce the spraying pressure may cause the spraying pressure to be too low, affecting the fire extinguishing effect. By setting the blocking part 230 on the outside of the second through hole 2112, when the pressure inside the fire extinguishing device 2 is too high, the internal pressure of the fire extinguishing device 2 can push the blocking part 230 away, thereby releasing pressure through the third through hole 2113, reducing the spraying pressure of the first through hole 2111, thereby reducing the spraying distance and spraying intensity, and then protecting the components and personnel within the spraying range.

[0110] Optionally, in the case of providing a rebound structure, when the internal pressure of the fire extinguishing device 2 is too low, the blocking portion 230 covers the second through hole 2112 , thereby increasing the spraying pressure of the first through hole 2111 .

[0111] When the internal pressure of the fire extinguishing device 2 is too high, the blocking portion 230 is pushed open by the violent reaction, and violent spraying may still occur. The slow-opening portion 23 can delay the movement of the blocking portion 230 along the thickness direction of the first wall 211, so that the second through hole 2112 can be slowly opened, thereby maintaining the pressure inside the fire extinguishing device 2 more smoothly and reducing the problem of high spraying pressure caused by rapid pressure release.

[0112] In the technical solution provided by the embodiment of the present application, the first through hole 2111 is used to spray aerosol, and the second through hole 2112 cooperates with the slow-opening portion 23 to maintain the pressure of the fire extinguishing device 2. When the internal pressure of the fire extinguishing device 2 is too high, the slow-opening portion 23 cooperates with the blocking portion 230 to slowly open the second through hole 2112 to release the pressure. Since the movement of the blocking portion 230 along the thickness direction of the first wall 211 is slowed down, the opening speed of the second through hole 2112 is slowed down, and the possibility of the high-temperature gas and smoke generated during the aerosol generation reaction being violently sprayed through the second through hole 2112 is reduced, thereby reducing the use risk of the fire extinguishing device 2.

[0113] In some possible embodiments, the first wall 211 is further provided with a third through hole 2113, the slow-opening portion 23 includes a transmission mechanism 232 and a first matching portion 31, one end of the transmission mechanism 232 is fixedly connected to the blocking portion 230, the transmission mechanism 232 passes through the third through hole 2113 and extends toward the accommodating cavity, and the first matching portion 31 is arranged on the peripheral side of the transmission mechanism 232; wherein, the transmission mechanism 232 cooperates with the first matching portion 31 to slow down the movement of the blocking portion 230 along the thickness direction of the first wall 211.

[0114] The first matching portion 31 can be a damping component, a hydraulic component, etc., or a structure that matches the structure on the transmission mechanism 232, and the present application is not limited thereto. For example, the first matching portion 31 can be a protrusion, a thread, a slot, etc.

[0115] In some possible embodiments, the transmission mechanism 232 includes a transmission shaft 2322 and a second matching portion 2321, and the second matching portion 2321 is connected to the transmission shaft 2322; wherein the first matching portion 31 cooperates with the second matching portion 2321 to enable the transmission mechanism 232 to slow down the movement of the blocking portion 230 along the thickness direction of the first wall 211.

[0116] There may be various implementations of the transmission mechanism 232 that can slow down the movement of the blocking portion 230 along the thickness direction of the first wall 211. The transmission mechanism 232 may include: Figure 4 and Figure 5 The transmission shaft 2322 with an oblique groove shown in the figure, the first matching part 31 includes a protruding structure provided on the inner wall of the first through hole 2111, and the protruding structure cooperates with the oblique groove to convert the linear motion into oblique motion. The transmission mechanism 232 may also include a transmission shaft 2322 with an external thread, and the first matching part 31 includes a structure with an internal thread, so as to convert the linear motion of the transmission mechanism 232 into a rotational motion. The transmission mechanism 232 may also be implemented in other ways, for example, the first matching part 31 includes a stepped slot structure, and the second matching part 2321 includes a protruding structure, and the two cooperate to realize the graded motion of the transmission mechanism 232. The above examples are only exemplary, and the embodiments of the present application are not limited thereto.

[0117] In the technical solution provided in the embodiment of the present application, the transmission mechanism 232 cooperates with the first matching part 31 through the second matching part 2321 so that the transmission mechanism 232 slows down the movement of the blocking part 230 along the thickness direction of the first wall 211, which can reduce the design complexity of the shell 21 and is beneficial to the preparation of the shell 21.

[0118] In some possible embodiments, a first limiting portion 233 is provided at the other end of the transmission mechanism 232 , and the first limiting portion 233 is configured to limit the movement of the transmission mechanism 232 away from the aerosol generating portion 22 along the thickness direction of the first wall 211 when abutting against the first wall 211 .

[0119] When the blocking portion 230 is pushed open by the pressure inside the fire extinguishing device 2, the transmission mechanism 232 is driven to move in a direction away from the aerosol generating portion 22. When the movement distance exceeds the length of the transmission mechanism 232 or the spraying is too violent, the slow-start portion 23 may be separated from the fire extinguishing device 2. Providing the first limiting portion 233 can effectively reduce the possibility of this problem occurring.

[0120] In the technical solution provided in the embodiment of the present application, a first limiting portion 233 is provided at the other end of the transmission mechanism 232. When the first limiting portion 233 abuts against the first wall 211, it limits the movement of the transmission mechanism 232 away from the aerosol generating portion 22 along the thickness direction of the first wall 211, thereby limiting the movement amplitude of the slow-start portion 23 and reducing the possibility of the blocking portion 230 detaching from the fire extinguishing device 2.

[0121] For reference Figure 6 and Figure 7 ,in, Figure 6 AA is a cross-sectional schematic diagram of a fire extinguishing device 2 provided in a certain embodiment of the present application; Figure 7 This application Figure 6 An enlarged view of point C of the fire extinguishing device 2 is provided.

[0122] In certain possible embodiments, the second mating portion 2321 includes a first thread 2323 arranged on the outer periphery of the transmission shaft 2322, and the first mating portion 31 includes a second thread 311 arranged on the inner wall of the first through hole 2111, wherein the first thread 2323 cooperates with the second thread 311 to enable the transmission mechanism 232 to slow down the movement of the blocking portion 230 along the thickness direction of the first wall 211.

[0123] The cooperation between the first thread 2323 and the second thread 311 can be understood as the diameter and pitch of the first thread 2323 and the second thread 311 matching each other, so that the transmission mechanism 232 can perform spiral motion along the thread line.

[0124] In the technical solution provided in the embodiment of the present application, the transmission mechanism 232 and the first wall 211 are threadedly matched to convert the linear motion along the thickness direction of the first wall 211 into the spiral motion along the thickness direction of the first wall 211, thereby slowing down the opening speed of the blocking part 230, thereby reducing the possibility of excessive spraying pressure caused by the second through hole 2112 opening too quickly.

[0125] For reference Figure 8 and Fig. 9 ,in, Figure 8 AA is a cross-sectional schematic diagram of a fire extinguishing device 2 provided in a certain embodiment of the present application; Fig. 9 This application Figure 8 An enlarged view of point D of the fire extinguishing device 2 is provided.

[0126] In some possible embodiments, the fire extinguishing device 2 further includes a partition 24 , which is disposed between the aerosol generating part 22 and the first wall 211 ; the partition 24 is provided with a fourth through hole 241 , and the fourth through hole 241 is staggered with the first through hole 2111 in the thickness direction of the first wall 211 .

[0127] The fourth through hole 241 and the first through hole 2111 are staggered in the thickness direction of the first wall 211 , which can be understood as the orthographic projection of the fourth through hole 241 toward the first wall 211 has no overlapping area with the orthographic projection of the first through hole 2111 toward the first wall 211 .

[0128] Figure 8 and Fig. 9 It is exemplified that the transmission mechanism 232 passes through the fifth through hole 242 of the partition plate 24 , but the transmission mechanism 232 may not pass through the partition plate 24 , and the embodiments of the present application are not limited thereto.

[0129] When the aerosol generating part 22 generates aerosol, the redox reaction may generate high-temperature gas. The high-temperature gas generated by the aerosol generating part 22 is blocked by the partition 24 through the fourth through hole 241 and the first through hole 2111, which are offset in the thickness direction of the first wall 211. The aerosol reaches the first through hole 2111 through the fourth through hole 241, thereby reducing the amount of combustion components in the aerosol sprayed from the first through hole 2111 and improving the reliability of the fire extinguishing device 2.

[0130] In some possible embodiments, a second limiting portion 234 is provided at the other end of the transmission mechanism 232, and the second limiting portion 234 is provided on the side of the partition 24 facing the aerosol generating portion 22; wherein the second limiting portion 234 is configured to limit the movement of the transmission mechanism 232 away from the aerosol generating portion 22 along the thickness direction of the first wall 211 when abutting against the partition 24.

[0131] When the blocking portion 230 is pushed open by the pressure inside the fire extinguishing device 2, the transmission mechanism 232 is driven to move in a direction away from the aerosol generating portion 22. When the movement distance exceeds the length of the transmission mechanism 232 or the spraying is too violent, the blocking portion 230 may be separated from the fire extinguishing device 2. Providing a second limiting portion 234 can effectively reduce the possibility of this problem occurring.

[0132] In the technical solution provided in the embodiment of the present application, a second limiting portion 234 is provided at the other end of the transmission mechanism 232. When the second limiting portion 234 abuts against the partition 24, it limits the movement of the transmission mechanism 232 away from the aerosol generating portion 22 along the thickness direction of the first wall 211, thereby limiting the movement amplitude of the slow-start portion 23 and reducing the possibility of the slow-start portion 23 detaching from the fire extinguishing device 2.

[0133] See also Fig.10 and Fig.11 ,in, Fig.10 AA is a cross-sectional schematic diagram of a fire extinguishing device 2 provided in a certain embodiment of the present application; Fig.11 This application Fig.10 An enlarged view of point E of the fire extinguishing device 2 is provided.

[0134] In certain possible embodiments, the transmission mechanism 232 includes a transmission shaft 2322, a third thread 2324 is provided on the outer periphery of the transmission shaft 2322, the partition plate 24 is provided with a fifth through hole 242, and the transmission mechanism 232 passes through the fifth through hole 242; wherein, the first matching portion 31 includes a fourth thread 243, the fourth thread 243 is provided on the inner wall of the fifth through hole 242, the third thread 2324 cooperates with the fourth thread 243 so that the transmission mechanism 232 slows down the movement of the blocking portion 230 along the thickness direction of the first wall 211.

[0135] In the technical solution provided in the embodiment of the present application, a fourth thread 243 is provided on the inner wall of the fifth through hole 242 of the partition 24, and a third thread 2324 is provided on the outer periphery of the transmission shaft 2322. The third thread 2324 and the fourth thread 243 cooperate to convert the linear motion along the thickness direction of the first wall 211 into the spiral motion along the thickness direction of the first wall 211, thereby slowing down the opening speed of the blocking portion 230 and reducing the possibility of excessive spraying pressure caused by the second through hole 2112 opening too quickly.

[0136] See also Fig.12 and Fig.13 ,in, Fig.12 AA is a cross-sectional schematic diagram of a fire extinguishing device 2 provided in a certain embodiment of the present application; Fig.13 This application Fig.12 An enlarged view of point F of the fire extinguishing device 2 is provided.

[0137] In some possible embodiments, a connecting portion 235 is further provided on the periphery of the transmission shaft 2322, and the connecting portion 235 is arranged between the first wall 211 and the partition 24. The fire extinguishing device 2 also includes a first elastic member 251, one end of the first elastic member 251 is connected to the side of the connecting portion 235 facing the aerosol generating portion 22, and the other end of the first elastic member 251 is connected to the side of the partition 24 facing the first wall 211.

[0138] The shape of the connection portion 235 can be a disc, or a square, a triangle, etc., which is not limited in the embodiment of the present application.

[0139] The first elastic member 251 in the embodiment of the present application may refer to an elastic member made of an elastic material, or may be an elastic member whose material has a certain rigidity but an elastic structure. The elastic modulus E of at least part of the first elastic member 251 may be in the range of 50GPa≤E≤300GPa.

[0140] The elastic modulus E of at least part of the first elastic member 251 is in the range of 50 GPa≤E≤300 GPa. The elastic modulus of the entire first elastic member 251 may be within this range, or the elastic modulus of a part of the first elastic member 251 may be within this range, while the elastic modulus of another part is higher, thereby improving the overall strength of the elastic connecting piece 33.

[0141] Furthermore, the elastic modulus E of at least part of the first elastic member 251 is in the range of 100 GPa≤E≤200 GPa. The elastic modulus E of at least part of the first elastic member 251 is in this range, which is more conducive to material processing and reduces the processing difficulty while providing a certain elasticity.

[0142] The value of the elastic modulus E of at least part of the first elastic member 251 may also be other values. For example, the value of the elastic modulus E of at least part of the first elastic member 251 may be any one of the following values ​​or between any two of the following values: 50 GPa, 75 GPa, 100 GPa, 125 GPa, 150 GPa, 175 GPa, 200 GPa, 225 GPa, 250 GPa, 275 GPa and 300 GPa.

[0143] The elastic modulus of the embodiments of the present application may refer to Young's modulus. The Young's modulus of a material may be measured by pulse excitation method, acoustic resonance method, sound velocity method, optical lever method, etc. It may also be calculated by applying a constant bending stress to a specimen to measure its elastic bending deflection. The present application does not limit this.

[0144] For example, Fig.12 and Fig.13The first elastic member 251 is taken as a spring as an example, but the embodiments of the present application are not limited to this. The first elastic connecting member can also be other structures. For example, the first elastic connecting member can be a spring sheet, a spring block, etc.

[0145] In the technical solution provided in the embodiment of the present application, when the transmission mechanism 232 moves in a direction away from the aerosol generating part 22, the first elastic member 251 is stretched, and the elastic stress generated is gradually balanced with the internal pressure. After the internal pressure is released, the first elastic member 251 contracts to reset the blocking part 230, further maintaining the spraying pressure of the fire extinguishing device 2. When the internal pressure of the fire extinguishing device 2 is too low, the blocking part 230 closes the second through hole 2112, so that spraying is only carried out through the first through hole 2111, thereby increasing the spraying pressure.

[0146] For reference Fig.14 and Fig.15 ,in, Fig.14 AA is a cross-sectional schematic diagram of a fire extinguishing device 2 provided in a certain embodiment of the present application; Fig.15 This application Fig.14 An enlarged view of point G of the fire extinguishing device 2 is provided.

[0147] In some possible embodiments, the fire extinguishing device 2 also includes a second elastic member 252, one end of the second elastic member 252 is connected to the side of the second limiting portion 234 facing the first wall 211, and the other end of the second elastic member 252 is connected to the side of the partition 24 facing the aerosol generating portion 22.

[0148] The description of the second elastic member 252 can refer to the above embodiment, and will not be elaborated herein.

[0149] In the technical solution provided in the embodiment of the present application, when the transmission mechanism 232 moves in a direction away from the aerosol generating part 22, the second elastic member 252 is compressed, and the generated elastic stress gradually balances with the internal pressure. After the internal pressure is released, the first elastic member 251 rebounds, and the blocking part 230 can be reset, thereby further maintaining the spraying pressure of the fire extinguishing device 2.

[0150] For reference Figures 16 to 18 ,in, Fig.16 is a top view of a fire extinguishing device 2 provided in a certain embodiment of the present application; Fig.17 AA is a cross-sectional schematic diagram of a fire extinguishing device 2 provided in a certain embodiment of the present application; Fig.18 This application Fig.17 An enlarged view of the fire extinguishing device 2 at point H is provided.

[0151] In some possible embodiments, a protruding structure 2312 is provided on the side of the blocking portion 230 facing the aerosol generating portion 22, the protruding structure 2312 passes through the third through hole 2113, a groove 2313 is provided on the side of the protruding structure 2312 facing the aerosol generating portion 22, and the transmission mechanism 232 is fixedly connected to the bottom wall of the groove 2313; wherein, a sixth through hole 2311 is provided on the bottom wall of the groove 2313, the sixth through hole 2311 passes through the blocking portion 230 and the bottom wall of the groove 2313 along the thickness direction of the blocking portion 230, the transmission mechanism 232 includes spiral blades distributed along the thickness direction of the first wall 211, the orthographic projection of the spiral blades toward the first wall 211 is located within the range of the orthographic projection of the groove 2313 toward the first wall 211, and the orthographic projection of the sixth through hole 2311 toward the first wall 211 is located within the range of the orthographic projection of the spiral blades toward the first wall 211.

[0152] A protruding structure 2312 is provided on the side of the blocking portion 230 facing the aerosol generating portion 22, and the protruding structure 2312 passes through the second through hole 2112. A groove 2313 is provided on the side of the protruding structure 2312 facing the aerosol generating portion 22, and a sixth through hole 2311 is provided on the bottom wall of the groove 2313. When the aerosol generating portion 22 reacts, the generated gas enters the groove 2313 and is guided to the sixth through hole 2311 through the flow channel of the groove 2313. In this process, the circulating gas pushes the spiral blades of the transmission mechanism 232, thereby pushing the blocking portion 230 to rotate and move away from the second through hole 2112 along the thickness direction of the first wall 211, thereby achieving slow pressure relief.

[0153] In some possible embodiments, a diameter of the first through hole 2111 is greater than a diameter of the second through hole 2112 .

[0154] In the technical solution provided in the embodiment of the present application, the diameter of the first through hole 2111 is greater than the diameter of the second through hole 2112, so that the first spray hole plays a major spraying role and the second through hole 2112 mainly plays a pressure relief role, thereby reducing the spraying pressure of the fire extinguishing device 2 and improving the reliability of the use of the fire extinguishing device 2.

[0155] According to some embodiments of the present application, the present application further provides an energy storage device, comprising the fire extinguishing device 2 described in any of the above schemes.

[0156] According to some embodiments of the present application, the present application further provides an electrical device, comprising the fire extinguishing device 2 described in any of the above schemes.

[0157] According to certain embodiments of the present application, a fire extinguishing device 2 is provided, the fire extinguishing device 2 includes a shell 21, the shell 21 includes a first wall 211 and a side wall 212, the first wall 211 is arranged at one end of the shell 21, the first wall 211 intersects with the side wall 212, the side wall 212 forms a receiving cavity, the first wall 211 is provided with a first through hole 2111, a second through hole 2112 and a third through hole 2113, the first through hole 2111 is used for aerosol spraying. The fire extinguishing device 2 also includes an aerosol generating unit 22, the aerosol generating unit 22 is arranged in the receiving cavity, and the aerosol generating unit 22 is used to generate the aerosol. The fire extinguishing device 2 further includes a slow-start portion 23, which is connected to a blocking portion 230. The slow-start portion 23 includes a transmission mechanism 232 and a first matching portion 31. The blocking portion 230 is arranged on a side of the first wall 211 away from the aerosol generating portion 22, one end of the transmission mechanism 232 is fixedly connected to the blocking portion 230, and the transmission mechanism 232 extends toward the aerosol generating portion 22 through the third through hole 2113, wherein the orthographic projection of the blocking portion 230 toward the first wall 211 covers the orthographic projection of the second through hole 2112 toward the first wall 211. The fire extinguishing device 2 further includes a partition 24, which is arranged between the aerosol generating portion 22 and the first wall 211, and the partition 24 is provided with a fourth through hole 241, and the fourth through hole 241 is staggered from the first through hole 2111 in the thickness direction of the first wall 211, thereby reducing the possibility of the first through hole 2111 spraying fire. The transmission mechanism 232 includes a transmission shaft 2322, and a third thread 2324 is provided on the outer periphery of the transmission shaft 2322. The partition 24 is provided with a fifth through hole 242, and the transmission mechanism 232 passes through the fifth through hole 242; wherein, the first matching portion 31 includes a fourth thread 243, and the fourth thread 243 is provided on the inner wall of the fifth through hole 242, and the third thread 2324 cooperates with the fourth thread 243 to enable the transmission mechanism 232 to slow down the movement of the blocking portion 230 along the thickness direction of the first wall 211. The transmission mechanism 232 cooperates with the first matching portion 31 to slow down the movement of the blocking portion 230 along the thickness direction of the first wall 211, thereby slowing down the opening speed of the second through hole 2112.A connecting portion 235 is also provided on the periphery of the transmission shaft 2322, and the connecting portion 235 is provided between the first wall 211 and the partition 24. The fire extinguishing device 2 also includes a first elastic member 251, one end of the first elastic member 251 is connected to the side of the connecting portion 235 facing the aerosol generating portion 22, and the other end of the first elastic member 251 is connected to the side of the partition 24 facing the first wall 211, so that when the pressure of the fire extinguishing device 2 rises, the slow-start portion 23 rotates and rises against the resistance of the first elastic member 251, and as the slow-start portion 23 gradually moves away from the second through hole 2112, the resistance becomes greater and greater. When the resistance and pressure are balanced, the slow-start portion 23 is relatively stationary. When the pressure inside the fire extinguishing device 2 drops, the first elastic member 251 causes the height of the slow-start portion 23 to gradually drop and return to the initial state. A protruding structure 2312 is provided on the side of the blocking portion 230 facing the aerosol generating portion 22, and the protruding structure 2312 passes through the third through hole 2113. A groove 2313 is provided on the side of the protruding structure 2312 facing the aerosol generating portion 22, and the transmission mechanism 232 is fixedly connected to the bottom wall of the groove 2313; wherein, a sixth through hole 2311 is provided on the bottom wall of the groove 2313, and the sixth through hole 2311 passes through the blocking portion 230 and the bottom wall of the groove 2313 along the thickness direction of the blocking portion 230, and the transmission mechanism 232 is fixedly connected to the bottom wall of the groove 2313. The driving mechanism 232 is provided with spiral blades distributed along the thickness direction of the first wall 211, the orthographic projection of the spiral blades toward the first wall 211 is located within the range of the orthographic projection of the groove 2313 toward the first wall 211, the orthographic projection of the sixth through hole 2311 toward the first wall 211 is located within the range of the orthographic projection of the spiral blades toward the first wall 211, and the fourth through hole 241 can be directly opposite to the groove 2313, thereby making the airflow larger and making the airflow fully contact with the spiral blades 2325, thereby improving the opening sensitivity of the blocking part 230.

[0158] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A fire extinguishing device, characterized in that: include: A shell (21), the shell (21) comprising a first wall (211) and a side wall (212), the side wall (212) comprising a receiving cavity having an opening, the first wall (211) covering the opening, the first wall (211) being provided with a first through hole (2111) and a second through hole (2112), the first through hole (2111) being used for aerosol spraying; a blocking portion (230), the blocking portion (230) being arranged on a side of the first wall (211) away from the accommodating cavity; a slow-opening portion (23), the slow-opening portion (23) being connected to the blocking portion (230) to slow down the movement of the blocking portion (230) along the thickness direction of the first wall (211); The first through hole (2111) is at least partially arranged outside the orthographic projection of the blocking portion (230) on the first wall (211), and the second through hole (2112) is arranged inside the orthographic projection of the blocking portion (230) on the first wall (211).

2. The fire extinguishing device according to claim 1, characterized in that: The first wall (211) is further provided with a third through hole (2113); the slow-opening portion (23) comprises a transmission mechanism (232) and a first matching portion (31); one end of the transmission mechanism (232) is fixedly connected to the blocking portion (230); the transmission mechanism (232) passes through the third through hole (2113) and extends toward the accommodating cavity; and the first matching portion (31) is provided on the peripheral side of the transmission mechanism (232); Wherein, the transmission mechanism (232) cooperates with the first matching portion (31) to slow down the movement of the blocking portion (230) along the thickness direction of the first wall (211).

3. The fire extinguishing device according to claim 2, characterized in that: A first limiting portion (233) is provided at the other end of the transmission mechanism (232). The orthographic projection of the first limiting portion (233) toward the first wall (211) at least partially covers the orthographic projection of the third through hole (2113) toward the first wall (211), so as to limit the movement of the transmission mechanism (232) along the thickness direction of the first wall (211) toward the outside of the fire extinguishing device when the first limiting portion (233) abuts against the first wall (211).

4. The fire extinguishing device according to claim 2, characterized in that: The fire extinguishing device also includes: an aerosol generating section (22), the aerosol generating section (22) being arranged in the containing chamber, the aerosol generating section (22) being used to generate the aerosol; a partition (24), the partition (24) being located in the accommodating chamber, and the partition (24) being arranged between the aerosol generating portion (22) and the first wall (211); The partition plate (24) is provided with a fourth through hole (241), and at least part of the orthographic projection of the first through hole (2111) toward the first wall (211) does not overlap with the orthographic projection of the fourth through hole (241) toward the first wall (211).

5. The fire extinguishing device according to claim 4, characterized in that: There is no overlapping area between the orthographic projections of the first through hole (2111) and the fourth through hole (241) toward the first wall (211).

6. The fire extinguishing device according to claim 4, characterized in that: The transmission mechanism (232) comprises a transmission shaft (2322) and a second matching portion (2321), wherein the second matching portion (2321) is connected to the transmission shaft (2322); Wherein, the first matching portion (31) matches with the second matching portion (2321) so that the transmission mechanism (232) slows down the movement of the blocking portion (230) along the thickness direction of the first wall (211).

7. The fire extinguishing device according to claim 6, characterized in that: The second matching portion (2321) comprises a first thread (2323) arranged on the outer circumference of the transmission shaft (2322); the first matching portion (31) comprises a second thread (311) arranged on the inner wall of the third through hole (2113); The first thread (2323) cooperates with the second thread (311) to enable the transmission mechanism (232) to slow down the movement of the blocking portion (230) along the thickness direction of the first wall (211).

8. The fire extinguishing device according to claim 6, characterized in that: The second matching portion (2321) comprises a third thread (2324) arranged on the outer periphery of the transmission shaft (2322), the partition plate (24) is provided with a fifth through hole (242), the transmission mechanism (232) passes through the fifth through hole (242), the first matching portion (31) comprises a fourth thread (243), the fourth thread (243) is arranged on the inner wall of the fifth through hole (242), The third thread (2324) cooperates with the fourth thread (243) to enable the transmission mechanism (232) to slow down the movement of the blocking portion (230) along the thickness direction of the first wall (211).

9. The fire extinguishing device according to claim 8, characterized in that: A connecting portion (235) is further provided on the outer periphery of the transmission shaft (2322), and the connecting portion (235) is provided between the first wall (211) and the partition (24). The fire extinguishing device further comprises: A first elastic member (251), one end of the first elastic member (251) being connected to a side of the connecting portion (235) facing the aerosol generating portion (22), and the other end of the first elastic member (251) being connected to a side of the partition plate (24) facing the first wall (211).

10. The fire extinguishing device according to claim 8, characterized in that: The other end of the transmission mechanism (232) is provided with a second limiting portion (234), and the second limiting portion (234) is arranged on a side of the partition plate (24) facing the aerosol generating portion (22); The orthographic projection of the second limiting portion (234) toward the first wall (211) at least partially covers the orthographic projection of the fifth through hole (242) toward the first wall (211) so as to limit the movement of the transmission mechanism (232) away from the aerosol generating portion (22) along the thickness direction of the first wall (211) when the second limiting portion (234) abuts against the partition (24).

11. The fire extinguishing device according to claim 10, characterized in that: The fire extinguishing device also includes: A second elastic member (252), one end of the second elastic member (252) being connected to a side of the second limiting portion (234) facing the first wall (211), and the other end of the second elastic member (252) being connected to a side of the partition plate (24) facing the aerosol generating portion (22).

12. The fire extinguishing device according to claim 4, characterized in that: A protruding structure (2312) is provided on the side of the blocking portion (230) facing the aerosol generating portion (22), the protruding structure (2312) passes through the third through hole (2113), a groove (2313) is provided on the side of the protruding structure (2312) facing the aerosol generating portion (22), and the transmission mechanism (232) is fixedly connected to the bottom wall of the groove (2313); The bottom wall of the groove (2313) is provided with a sixth through hole (2311), and the sixth through hole (2311) penetrates the blocking portion (230) and the bottom wall of the groove (2313) along the thickness direction of the blocking portion (230); the transmission mechanism (232) is provided with spiral blades (2325) distributed along the thickness direction of the first wall (211); the orthographic projection of the spiral blades (2325) toward the first wall (211) is located within the range of the orthographic projection of the groove (2313) toward the first wall (211); and the orthographic projection of the sixth through hole (2311) toward the first wall (211) is located within the range of the orthographic projection of the spiral blades (2325) toward the first wall (211).

13. The fire extinguishing device according to claim 1, characterized in that: The diameter of the first through hole (2111) is greater than the diameter of the second through hole (2112).

14. The fire extinguishing device according to any one of claims 1 to 13, characterized in that: The first through hole (2111) is farther away from the center of the first wall (211) than the second through hole (2112).

15. An energy storage system, characterized in that: The energy storage system comprises a fire extinguishing device according to any one of claims 1 to 14.

16. An electrical device, characterized in that: The electrical device comprises a fire extinguishing device according to any one of claims 1 to 14.

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