Closed blocking type automatic fire extinguishing device for battery pack

Abstract

The closed blocking type automatic fire extinguishing device comprises an anti-explosion battery box, a closed blocking cover, a driving assembly, a temperature sensor, a smoke sensor and a fire extinguishing assembly, the temperature sensor and the smoke sensor are arranged on the inner wall of the anti-explosion battery box, heat dissipation grids are arranged on the side walls of the two sides of the anti-explosion battery box, and the fire extinguishing assembly is arranged on the outer wall of the anti-explosion battery box. The driving assembly is arranged at the bottom of the anti-explosion battery box and connected with the closed blocking covers, the closed blocking covers are symmetrically arranged on the two sides of the anti-explosion battery box, each closed blocking cover comprises a top partition plate and side wall partition plates, the top partition plates are arranged on the top of the anti-explosion battery box in a sliding mode, and the side wall partition plates are arranged on the surfaces of the two side walls of the anti-explosion battery box in a sliding mode. The fire extinguishing assembly comprises fire extinguishing pipelines which are arranged on the tops of the inner walls of the two sides of the anti-explosion battery box.

Description

Technical Field

[0001] This invention belongs to the field of battery pack safety technology, specifically referring to a closed-loop automatic fire extinguishing device for battery packs. Background Technology

[0002] With the increasing aging of the population, the demand for transportation tools among the elderly is growing. Small, informal new energy vehicles such as "elderly-friendly" electric vehicles have become widely used among the elderly due to their ease of operation, affordability, and convenient driving. However, the battery packs in these vehicles pose serious safety hazards during use, especially issues such as abnormal overheating, smoke, and even fire, which seriously threaten the lives of the elderly.

[0003] In related technologies, in order to consider costs, manufacturers install the battery pack at the rear bottom of the vehicle without designing an effective active fire extinguishing mechanism. They only strengthen the structural strength around the battery pack. When the battery pack is exposed to high temperatures and starts to smoke and catch fire, it cannot effectively extinguish the fire or prevent the spread of flames, which will bring safety hazards. Summary of the Invention

[0004] In view of the above situation and to overcome the defects of the prior art, the present invention provides a closed-loop automatic fire extinguishing device for battery packs to solve the problems mentioned in the background art.

[0005] The technical solution adopted by this invention is as follows: This invention proposes a closed-loop automatic fire extinguishing device for battery packs, including an explosion-proof battery box, a closed-loop cover, a drive assembly, a temperature sensor, a smoke sensor, and a fire extinguishing assembly. The inner wall of the explosion-proof battery box is equipped with a temperature sensor and a smoke sensor. Heat dissipation grilles are provided on both side walls of the explosion-proof battery box. The drive assembly is located at the bottom of the explosion-proof battery box and is connected to the closed-loop cover. The closed-loop cover is symmetrically arranged on both sides of the explosion-proof battery box. The closed-loop cover includes a top partition and side wall partitions. The top partition is slidably disposed on the top of the explosion-proof battery box, and the side wall partitions are slidably disposed on the surfaces of both side walls of the explosion-proof battery box. The fire extinguishing assembly includes fire extinguishing pipes, which are located on the top of the inner walls on both sides of the explosion-proof battery box.

[0006] Furthermore, the two side walls at one end of the closed blocking cover are fixedly connected to the side wall partition, and the bottom of the side wall partition is connected to the drive assembly.

[0007] Furthermore, the drive assembly includes a drive motor, a drive rack, and a bottom push plate. The bottom of the side wall partition is fixedly connected to both ends of the bottom push plate, and the bottom of the bottom push plate is fixedly connected to the bottom of the drive rack. The drive rack is movably mounted on the lower surface of the explosion-proof battery box. The drive motor is fixedly mounted on the lower surface of the explosion-proof battery box via a mounting bracket. The output end of the drive motor is connected to a drive gear, which meshes with the drive rack.

[0008] Furthermore, the fire extinguishing assembly also includes a fire extinguisher, which is located on one side of the explosion-proof battery box and on a support plate. The support plate is bolted to one side of the explosion-proof battery box. One end of the fire extinguisher is connected to the fire extinguishing pipeline. A solenoid valve is installed between the fire extinguisher and the fire extinguishing pipeline. Multiple nozzles are distributed on the fire extinguishing pipeline.

[0009] Furthermore, the explosion-proof battery box is equipped with a controller, and the temperature sensor, smoke sensor, drive motor and solenoid valve are all electrically connected to the controller.

[0010] Furthermore, the front and rear sides of the explosion-proof battery box are connected to mating mounting plates, and the explosion-proof battery box is also provided with sliding latches. The sliding latches are symmetrically arranged on both sides of the explosion-proof battery box and on the upper and lower sides of the heat dissipation grille. The sliding latches are slidably connected to the side wall partitions.

[0011] The beneficial effects of the present invention using the above structure are as follows: The temperature and smoke conditions inside the battery pack are monitored in real time by temperature and smoke sensors. When the sensors detect an abnormal increase in battery pack temperature or a smoke concentration reaching a preset threshold, the controller issues a command to automatically activate the drive assembly to center and merge the two closed blocking covers to seal and block the top opening of the explosion-proof battery box and the heat dissipation grilles on the front and rear sides, thereby preventing the spread of flames and smoke. At the same time, the fire extinguishing assembly is activated, and the fire extinguishing agent is evenly sprayed onto the battery pack through the fire extinguishing pipeline via the fire extinguishing device, achieving a rapid fire extinguishing response and ensuring personal safety. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of a closed-loop automatic fire extinguishing device for battery packs proposed in this invention;

[0013] Figure 2 This is a schematic diagram of the drive assembly of a closed-off automatic fire extinguishing device for battery packs proposed in this invention.

[0014] Figure 3 This is a schematic diagram of the structure of a closed-off cover for a closed-off automatic fire extinguishing device for battery packs proposed in this invention;

[0015] Figure 4This is a schematic diagram of the structure of a fire extinguishing component for a closed-off automatic fire extinguishing device for a battery pack, as proposed in this invention.

[0016] Figure 5 This is a schematic diagram of the structure of an explosion-proof battery box for a closed-loop automatic fire extinguishing device for battery packs, as proposed in this invention.

[0017] Figure 6 This is a reference diagram showing the usage status of a closed-loop automatic fire extinguishing device for battery packs proposed in this invention.

[0018] Among them, 1. Explosion-proof battery box, 2. Drive assembly, 3. Closed blocking cover, 4. Bottom push plate, 5. Drive rack, 6. Drive motor, 7. Drive gear, 8. Mounting bracket, 9. Temperature sensor, 10. Smoke sensor, 11. Fire extinguishing assembly, 12. Fire extinguisher, 13. Solenoid valve, 14. Fire extinguishing pipeline, 15. Nozzle, 16. Heat dissipation grille, 17. Connecting mounting plate, 18. Sliding bayonet, 19. Support plate, 21. Top partition, 22. Side wall partition.

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] like Figures 1-6 As shown, the present invention proposes a closed-loop automatic fire extinguishing device for battery packs, including an explosion-proof battery box 1, a closed-loop cover 3, a drive assembly 2, a temperature sensor 9, a smoke sensor 10, and a fire extinguishing assembly 11.

[0023] The explosion-proof battery box 1 is equipped with a temperature sensor 9 and a smoke sensor 10 on its inner wall for real-time monitoring of the temperature and smoke levels inside the battery pack. Heat dissipation grilles 16 are provided on both side walls of the explosion-proof battery box 1 to facilitate proper heat dissipation from the battery pack. Mounting plates 17 are connected to the front and rear sides of the explosion-proof battery box 1 for easy installation in the desired location. Sliding latches 18 are also provided on the explosion-proof battery box 1, symmetrically arranged on both sides of the explosion-proof battery box 1, and positioned above and below the heat dissipation grilles 16.

[0024] Under normal use, the battery pack can be installed into the explosion-proof battery box 1, and then the explosion-proof battery box 1 can be installed in the designated position of the vehicle through the docking mounting plate 17. When not triggered, the two symmetrically arranged closed blocking covers 3 on the explosion-proof battery box 1 open to the sides, so that the top opening of the explosion-proof battery box 1 is open to facilitate normal heat dissipation. The wiring of the battery pack can be routed through the side wall of the explosion-proof battery box 1. The top opening is only used for loading, unloading and heat dissipation.

[0025] In one embodiment of this invention, the drive assembly 2 is located at the bottom of the explosion-proof battery box 1 and connected to the closed blocking cover 3. When the temperature sensor 9 or the smoke sensor 10 detects an abnormality, the drive assembly 2 is activated, moving the closed blocking cover 3 to the top and sides of the explosion-proof battery box 1, enclosing the battery pack inside the explosion-proof battery box 1 and preventing the fire from spreading.

[0026] Specifically, the closed blocking cover 3 is symmetrically arranged on both sides of the explosion-proof battery box 1, including a top partition 21 and side wall partitions 22. The top partition 21 is slidably disposed on the top of the explosion-proof battery box 1, and the side wall partitions 22 are slidably disposed on the two side wall surfaces of the explosion-proof battery box 1. The two side walls at one end of the closed blocking cover 3 are fixedly connected to the side wall partitions 22, and the bottom of the side wall partitions 22 is connected to the drive assembly 2. The sliding latch 18 is slidably connected to the side wall partitions 22 to ensure that the side wall partitions 22 remain stable during movement.

[0027] The drive assembly 2 includes a drive motor 6, a drive rack 5, and a bottom push plate 4. The bottom of the side wall partition 22 is fixedly connected to both ends of the bottom push plate 4, and the bottom of the bottom push plate 4 is fixedly connected to the bottom of the drive rack 5. The drive rack 5 is movably mounted on the lower surface of the explosion-proof battery box 1. The drive motor 6 is fixedly mounted on the lower surface of the explosion-proof battery box 1 via a mounting bracket 8. The output end of the drive motor 6 is connected to a drive gear 7, which meshes with the drive rack 5. When the drive motor 6 starts, the drive gear 7 drives the drive rack 5 to move, which in turn causes the bottom push plate 4 to move the side wall partition 22 to slide within the sliding slot 18, moving synchronously with the top partition 21. This achieves the closure of the heat dissipation grille 16 and the top opening of the explosion-proof battery box 1, isolating them from the outside and preventing the spread of fire and smoke.

[0028] In one embodiment of this utility model, the fire extinguishing assembly 11 includes a fire extinguishing pipeline 14 and a fire extinguisher 12. The fire extinguishing pipeline 14 is located at the top of the inner walls on both sides of the explosion-proof battery box 1 and is used to spray extinguishing agent onto the battery pack. The fire extinguisher 12 is located on one side of the explosion-proof battery box 1 and is mounted on a support plate 19, which is bolted to one side of the explosion-proof battery box 1. One end of the fire extinguisher 12 is connected to the fire extinguishing pipeline 14, and a solenoid valve 13 is provided between the fire extinguisher 12 and the fire extinguishing pipeline 14. When it is necessary to spray extinguishing agent, the solenoid valve 13 opens, and the extinguishing agent is sprayed onto the battery pack through the fire extinguishing pipeline 14. Multiple nozzles 15 are distributed on the fire extinguishing pipeline 14 to ensure that the extinguishing agent can be sprayed evenly onto the battery pack.

[0029] After the closed blocking cover 3 seals the explosion-proof battery box 1, the fire extinguishing assembly 11 can extinguish and cool the battery pack. The controller (not shown in the figure) opens the solenoid valve 13 on the fire extinguisher 12, so that the fire extinguisher 12 delivers the extinguishing agent through the fire extinguishing pipeline 14 to the nozzles 15 distributed on both sides of the top of the explosion-proof battery box 1, so as to achieve comprehensive fire extinguishing and cooling.

[0030] The explosion-proof battery box 1 is equipped with a controller (not shown in the figure). The temperature sensor 9, smoke sensor 10, drive motor 6, and solenoid valve 13 are all electrically connected to the controller. This design enables automated control. When the temperature sensor 9 or smoke sensor 10 detects an abnormality, the controller automatically starts the drive motor 6 and solenoid valve 13 to achieve closure and fire extinguishing operations.

[0031] In summary, this invention uses a temperature sensor 9 and a smoke sensor 10 to monitor the temperature and smoke levels inside the battery pack in real time. When an abnormality is detected, the drive assembly 2 and the fire extinguishing assembly 11 are automatically activated to achieve rapid response and fire extinguishing. Simultaneously, a closed containment cover 3 encloses the battery pack within the explosion-proof battery box 1 to prevent the fire from spreading and improve the fire extinguishing effect. The drive assembly 2 employs a design with a drive motor 6, a drive rack 5, and a bottom push plate 4, resulting in a simple, stable, and reliable structure that enables rapid movement of the closed containment cover 3. The fire extinguishing assembly 11 uses a fire extinguisher 12 and a fire extinguishing pipeline 14 to evenly spray extinguishing agent onto the battery pack, improving fire extinguishing efficiency.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0034] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A closed-loop automatic fire extinguishing device for battery packs, characterized in that: The device includes an explosion-proof battery box (1), a closed blocking cover (3), a drive assembly (2), a temperature sensor (9), a smoke sensor (10), and a fire extinguishing assembly (11). The inner wall of the explosion-proof battery box (1) is equipped with a temperature sensor (9) and a smoke sensor (10), and the two side walls of the explosion-proof battery box (1) are provided with heat dissipation grilles (16). The drive assembly (2) is located at the bottom of the explosion-proof battery box (1) and is connected to the closed blocking cover (3). The closed blocking cover (3) is symmetrically arranged on both sides of the explosion-proof battery box (1). The closed blocking cover (3) includes a top partition (21) and a side wall partition (22). The top partition (21) is slidably arranged on the top of the explosion-proof battery box (1), and the side wall partition (22) is slidably arranged on the side wall surfaces of the explosion-proof battery box (1). The fire extinguishing assembly (11) includes a fire extinguishing pipeline (14). The fire extinguishing pipeline (14) is arranged on the top of the inner walls on both sides of the explosion-proof battery box (1).

2. The automatic fire extinguishing device for battery packs with closed-loop blocking mechanism according to claim 1, characterized in that: The two side walls of one end of the closed blocking cover (3) are fixedly connected to the side wall partition (22), and the bottom of the side wall partition (22) is connected to the drive assembly (2).

3. The automatic fire extinguishing device for battery packs with a closed-loop blocking mechanism according to claim 2, characterized in that: The drive assembly (2) includes a drive motor (6), a drive rack (5), and a bottom push plate (4). The bottom of the side wall partition (22) is fixedly connected to both ends of the bottom push plate (4), and the bottom of the bottom push plate (4) is fixedly connected to the bottom of the drive rack (5). The drive rack (5) is movably disposed on the lower surface of the explosion-proof battery box (1). The drive motor (6) is fixedly disposed on the lower surface of the explosion-proof battery box (1) by a mounting bracket (8). The output end of the drive motor (6) is connected to a drive gear (7), and the drive gear (7) meshes with the drive rack (5).

4. The automatic fire extinguishing device for battery packs with closed-loop blocking mechanism according to claim 3, characterized in that: The fire extinguishing assembly (11) also includes a fire extinguisher (12), which is located on one side of the explosion-proof battery box (1) and on a support plate (19). The support plate (19) is bolted to one side of the explosion-proof battery box (1). The fire extinguisher (12) is connected to one end of the fire extinguishing pipeline (14). A solenoid valve (13) is provided between the fire extinguisher (12) and the fire extinguishing pipeline (14). Multiple nozzles (15) are distributed on the fire extinguishing pipeline (14).

5. The automatic fire extinguishing device for battery packs with a closed-loop blocking mechanism according to claim 4, characterized in that: The explosion-proof battery box (1) is equipped with a controller, and the temperature sensor (9), smoke sensor (10), drive motor (6) and solenoid valve (13) are all electrically connected to the controller.

6. A closed-loop automatic fire extinguishing device for a battery pack according to claim 5, characterized in that: The explosion-proof battery box (1) is connected to the front and rear sides by a docking mounting plate (17). The explosion-proof battery box (1) is also provided with a sliding bayonet (18). The sliding bayonet (18) is symmetrically arranged on both sides of the explosion-proof battery box (1). The sliding bayonet (18) is arranged on the upper and lower sides of the heat dissipation grille (16). The sliding bayonet (18) is slidably connected to the side wall partition (22).

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