Flame-retardant generation device for new energy battery

Abstract

The utility model discloses a flame-retardant generating device for a new energy battery, and relates to the technical field of new energy batteries, the flame-retardant generating device comprises a flame-retardant box body and a new energy battery pack, a plurality of damping bases are uniformly distributed on the surface of the bottom end of the new energy battery pack, and the plurality of damping bases are fixedly arranged at the bottom end of the inner wall of the flame-retardant box body; a plurality of heat dissipation openings are formed in the surface of the top end of the flame-retardant box body, shielding plates are fixedly arranged on the inner walls of the heat dissipation openings, rotating shafts are movably connected to the surfaces of the outer sides of the shielding plates, and sealing plates are fixedly arranged on the surfaces of the outer sides of the rotating shafts; through the sealing plate and the shielding plate which are arranged in an overlapped mode, a heat dissipation gap is reserved in the heat dissipation opening, the temperature of the surface of the new energy battery pack is sensed through the temperature sensing resistor, and after the sealing plate and the shielding plate are driven by the driving assembly to be separated from each other, the sealing plate seals the heat dissipation gap in the heat dissipation opening. And meanwhile, the fire extinguishing flow agent is guided into the guide-out pipe from the curved pipe, and the effect of rapidly extinguishing the new energy battery pack is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy batteries, in particular to a flame retardant generating device for new energy batteries. Background Art

[0002] Lithium iron phosphate batteries have a series of unique advantages such as high working voltage, large energy density, long cycle life, and environmental friendliness, and support stepless expansion. After forming an energy storage system, they can store large-scale electric energy and are widely used in new energy vehicles. However, the lithium batteries used in new energy vehicles generate a large amount of heat during operation. If the heat cannot be discharged in time, it may lead to thermal runaway of the battery, and even cause a fire or explosion, seriously threatening the lives of the driver and passengers. Therefore, how to effectively manage and control the heat of the battery has become one of the important research topics in the development of new energy vehicles;

[0003] At present, the main lithium battery flame retardant and heat insulation materials on the market include foam, plastic foam, ultra-fine glass wool, high silica oxygen cotton, vacuum heat insulation board, etc. These materials have their own characteristics. For example, foam has good resilience and high customization, while the vacuum heat insulation board has better heat insulation effect. However, no matter which heat insulation material is used, covering and wrapping the lithium battery with the material will affect its heat dissipation effect, and it is difficult to achieve the flame retardant effect if the covering is not in place.

[0004] In view of the above technical defects, a solution is proposed. Content of the Utility Model

[0005] The purpose of the utility model is as follows: through the overlapping arrangement of the sealing plate and the shielding plate, the heat dissipation opening is provided with a heat dissipation gap. The temperature of the surface of the new energy battery pack is sensed by a temperature-sensitive resistor. After the driving component drives the sealing plate and the shielding plate to separate from each other, the sealing plate seals the heat dissipation gap at the heat dissipation opening, and at the same time, the fire extinguishing fluid is introduced from the curved pipe to the outlet pipe, realizing the effect of quickly extinguishing the fire of the new energy battery pack.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: a flame retardant generating device for new energy batteries, including a flame retardant box body and a new energy battery pack. A plurality of shock-absorbing bases are evenly distributed on the bottom surface of the new energy battery pack, and the plurality of shock-absorbing bases are fixed on the bottom end inner wall of the flame retardant box body. A plurality of heat dissipation openings are opened on the top surface of the flame retardant box body, a shielding plate is fixed on the inner wall of the plurality of heat dissipation openings, a rotating shaft is movably connected to the outer surface of the shielding plate, a sealing plate is fixed on the outer surface of the rotating shaft, a flame retardant mechanism is fixed on the outer surface of the sealing plate, and a sealing driving mechanism is fixed on the outer surface of the rotating shaft.

[0007] Furthermore, the baffle is of a sector structure, and the sealing plate is also of a sector structure. The cross-sectional area of the sealing plate is larger than that of the baffle, and the bottom surface of the sealing plate is in movable contact with the top surface of the baffle.

[0008] Furthermore, the sealing driving mechanism includes a fixed track and a driving component. The fixed track is fixedly arranged on the top surface of the flame-retardant box body, and a driving gear is fixedly arranged on the bottom surface of the rotating shaft. The driving component is fixedly arranged between the driving component and the fixed track.

[0009] Furthermore, the driving component includes a moving block and a traction wire. The moving block is movably connected to the inner wall of the fixed track. Tooth blocks are evenly distributed on the outer surface of the moving block. The tooth blocks are meshed with the driving gear. A return spring is fixedly arranged between the moving block and the inner wall of the fixed track. One end of the traction wire is connected to the outer surface of the moving block. A fusing wire is commonly connected between two adjacent traction wires. A temperature-sensitive resistor is fixedly arranged on the outer surface of the new energy battery pack. The temperature-sensitive resistor is electrically connected to the fusing wire, and the fusing wire is electrically connected to the power supply.

[0010] Furthermore, the flame-retardant mechanism includes a pressurized storage tank and a guiding component. The pressurized storage tank is fixedly arranged on the outer surface of the flame-retardant box body. The guiding component is fixedly arranged on the outer surface of the output port of the pressurized storage tank. Fire extinguishing fluid is stored inside the pressurized storage tank.

[0011] Furthermore, the guiding component includes a flexible conduit. The outer surface of the output port of the pressurized storage tank is connected with the flexible conduit. A switching valve is fixedly arranged inside the flexible conduit. A curved pipe is fixedly arranged on the outer surface of the sealing plate. The end surface of the flexible conduit is connected to the inside of the curved pipe. A plurality of guiding pipes are fixedly arranged on the outer surface of the curved pipe. The end of the guiding pipe extends to the bottom surface of the sealing plate.

[0012] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0013] 1. For the flame-retardant generating device for new energy batteries, through the overlapping arrangement of the sealing plate and the baffle, the heat dissipation opening has a heat dissipation gap, ensuring the heat dissipation requirement of the new energy battery pack during use and avoiding failures caused by overheating.

[0014] 2. The flame retardant generating device for the new energy battery senses the temperature on the surface of the new energy battery pack through a temperature-sensitive resistor. When the temperature on the surface of the new energy battery pack exceeds the temperature change threshold of the temperature-sensitive resistor, the resistance value of the temperature-sensitive resistor becomes smaller, and the fuse is connected to the circuit. After the fuse is energized and heated to melt, the traction wire is disconnected. After the driving component drives the sealing plate and the baffle plate to separate from each other, the sealing plate seals the heat dissipation gap at the heat dissipation opening, isolates the new energy battery pack from the external environment, avoids the spread of fire, and improves safety.

[0015] 3. In the flame retardant generating device for the new energy battery, the fire extinguishing fluid stored under pressure in the pressure storage tank is led out along the flexible conduit to the curved pipe under the action of negative pressure. Since the sealing plate and the baffle plate are separated from each other, the outlet pipe at the bottom of the sealing plate is communicated with the inside of the flame retardant box body, so that the fire extinguishing fluid is introduced from the curved pipe into the outlet pipe and then enters the flame retardant box body. The fire extinguishing fluid is perfluoromethylcyclohexanone, achieving the effect of quickly extinguishing the new energy battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 shows the overall external structure schematic diagram of the present utility model;

[0017] Figure 2 shows the overall internal structure schematic diagram of the present utility model;

[0018] Figure 3 shows the external structure schematic diagram of the flame retardant mechanism of the present utility model;

[0019] LEGEND DESCRIPTION: 1. Flame retardant box body; 2. Shock absorption base; 3. New energy battery pack; 4. Heat dissipation opening; 5. Baffle plate; 6. Rotating shaft; 7. Sealing plate; 8. Fixed track; 9. Moving block; 10. Tooth block; 11. Return spring; 12. Traction wire; 13. Fuse; 14. Temperature-sensitive resistor; 15. Pressure storage tank; 16. Flexible conduit; 17. Switch valve; 18. Curved pipe; 19. Outlet pipe; 20. Driving gear. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0021] Embodiment:

[0022] As Figures 1-3As shown in the figure, a flame retardant generating device for a new energy battery includes a flame retardant box body 1 and a new energy battery pack 3. A number of shock absorption bases 2 are evenly distributed on the bottom surface of the new energy battery pack 3, and the number of shock absorption bases 2 is fixedly arranged at the bottom end of the inner wall of the flame retardant box body 1. A number of heat dissipation openings 4 are provided on the top surface of the flame retardant box body 1, and a shielding plate 5 is fixedly arranged at the inner wall of the number of heat dissipation openings 4. A rotating shaft 6 is movably connected to the outer surface of the shielding plate 5, a sealing plate 7 is fixedly arranged on the outer surface of the rotating shaft 6, a flame retardant mechanism is fixedly arranged on the outer surface of the sealing plate 7, and a sealing driving mechanism is fixedly arranged on the outer surface of the rotating shaft 6.

[0023] The shielding plate 5 is of a fan-shaped structure, and the sealing plate 7 is also of a fan-shaped structure. The cross-sectional area of the sealing plate 7 is larger than that of the shielding plate 5, and the bottom surface of the sealing plate 7 is in movable contact with the top surface of the shielding plate 5.

[0024] The sealing driving mechanism includes a fixed track 8 and a driving component. The fixed track 8 is fixedly arranged on the top surface of the flame retardant box body 1, and a driving gear 20 is fixedly arranged on the bottom surface of the rotating shaft 6. The driving component is fixedly arranged between the driving component and the fixed track 8.

[0025] The driving component includes a moving block 9 and a traction wire 12. The moving block 9 is movably connected to the inner wall of the fixed track 8. Tooth blocks 10 are evenly distributed on the outer surface of the moving block 9. The tooth blocks 10 are meshed with the driving gear 20. A return spring 11 is fixedly arranged between the moving block 9 and the inner wall of the fixed track 8. One end of the traction wire 12 is connected to the outer surface of the moving block 9. A fuse wire 13 is commonly connected between two adjacent traction wires 12. A temperature-sensitive resistor 14 is fixedly arranged on the outer surface of the new energy battery pack 3. The temperature-sensitive resistor 14 is electrically connected to the fuse wire 13, and the fuse wire 13 is electrically connected to the power supply.

[0026] The flame retardant mechanism includes a pressurized storage tank 15 and a guiding component. The pressurized storage tank 15 is fixedly arranged on the outer surface of the flame retardant box body 1. The guiding component is fixedly arranged on the outer surface of the output port of the pressurized storage tank 15. The pressurized storage tank 15 stores a fire extinguishing fluid inside.

[0027] The guiding component includes a flexible conduit 16. The outer surface of the output port of the pressurized storage tank 15 is connected to the flexible conduit 16. A switching valve 17 is fixedly arranged inside the flexible conduit 16. A curved pipe 18 is fixedly arranged on the outer surface of the sealing plate 7. The end surface of the flexible conduit 16 is connected to the inside of the curved pipe 18. A number of guiding pipes 19 are fixedly arranged on the outer surface of the curved pipe 18. The end of the guiding pipe 19 extends to the bottom surface of the sealing plate 7.

[0028] The working principle is as follows:

[0029] By overlapping the arranged sealing plate 7 and baffle plate 5, a heat dissipation gap is retained in the heat dissipation opening 4, ensuring the heat dissipation requirement of the new energy battery pack 3 during use and avoiding failures caused by overheating. The temperature on the surface of the new energy battery pack 3 is sensed by the temperature-sensitive resistor 14. When the temperature on the surface of the new energy battery pack 3 exceeds the temperature change threshold of the temperature-sensitive resistor 14, at this time, the new energy battery pack 3 catches fire due to overheating, the resistance value of the temperature-sensitive resistor 14 becomes smaller, the fuse 13 is connected to the circuit, the fuse 13 generates heat and melts after being energized, so that the traction wire 12 is disconnected. Under the reset action of the return spring 11, the moving block 9 is pulled to move along the fixed track 8. Due to the meshing action of the tooth block 10 and the driving gear 20, the rotating shaft 6 rotates synchronously. During the rotation of the rotating shaft 6, the sealing plate 7 is driven to move. After the sealing plate 7 is separated from the baffle plate 5, the sealing plate 7 seals the heat dissipation gap at the heat dissipation opening 4, isolating the new energy battery pack 3 from the external environment, avoiding the spread of fire and improving safety;

[0030] The switching valve 17 is simultaneously connected to the circuit and opened. The fire extinguishing fluid in the pressurized storage tank 15 is led out along the flexible conduit 16 under the negative pressure and enters the curved pipe 18. Since the sealing plate 7 is separated from the baffle plate 5, the outlet pipe 19 at the bottom end of the sealing plate 7 is communicated with the inside of the flame retardant box body 1, so that the fire extinguishing fluid is introduced from the curved pipe 18 into the outlet pipe 19 and then enters the flame retardant box body 1. The fire extinguishing fluid is perfluoromethylcyclohexane, achieving the effect of quickly extinguishing the fire of the new energy battery pack 3.

[0031] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A flame retardant generating device for a new energy battery, comprising a flame retardant box (1) and a new energy battery pack (3), characterized in that: A plurality of shock-absorbing bases (2) are evenly distributed on the bottom surface of the new energy battery pack (3), and a plurality of the shock-absorbing bases (2) are fixedly arranged at the bottom end of the inner wall of the flame-retardant box (1). A plurality of heat dissipation openings (4) are opened on the top surface of the flame-retardant box (1), and a plurality of shielding plates (5) are fixedly arranged on the inner walls of the plurality of heat dissipation openings (4). The outer surface of the shielding plate (5) is movably connected to a rotating shaft (6), and a sealing plate (7) is fixedly arranged on the outer surface of the rotating shaft (6). A flame-retardant mechanism is fixedly arranged on the outer surface of the sealing plate (7), and a sealing drive mechanism is fixedly arranged on the outer surface of the rotating shaft (6).

2. The flame retardant generating device for new energy batteries according to claim 1, characterized in that: The shielding plate (5) is a fan-shaped structure, and the sealing plate (7) is also a fan-shaped structure. The cross-sectional area of ​​the sealing plate (7) is larger than the cross-sectional area of ​​the shielding plate (5), and the bottom end surface of the sealing plate (7) is in active contact with the top end surface of the shielding plate (5).

3. The flame retardant generating device for new energy batteries according to claim 2, characterized in that: The sealing drive mechanism comprises a fixed track (8) and a drive assembly, wherein the fixed track (8) is fixedly arranged on the top surface of the flame retardant box (1), a drive gear (20) is fixedly arranged on the bottom surface of the rotating shaft (6), and the drive assembly is fixedly arranged between the drive assembly and the fixed track (8).

4. The flame retardant generating device for new energy batteries according to claim 3, characterized in that: The driving assembly comprises a moving block (9) and a traction wire (12); the moving block (9) is movably connected to the inner wall of the fixed track (8); tooth blocks (10) are evenly distributed on the outer surface of the moving block (9); the tooth blocks (10) are meshed with the driving gear (20); a return spring (11) is fixedly arranged between the moving block (9) and the inner wall of the fixed track (8); one end of the traction wire (12) is connected to the outer surface of the moving block (9); a fuse (13) is commonly connected between two adjacent traction wires (12); a temperature-sensitive resistor (14) is fixedly arranged on the outer surface of the new energy battery pack (3); the temperature-sensitive resistor (14) is electrically connected to the fuse (13); and the fuse (13) is electrically connected to a power supply.

5. The flame retardant generating device for new energy batteries according to claim 1, characterized in that: The flame retardant mechanism comprises a pressurized storage tank (15) and a discharge assembly, wherein the pressurized storage tank (15) is fixedly mounted on the outer surface of the flame retardant housing (1), and the discharge assembly is fixedly mounted on the outer surface of the output port of the pressurized storage tank (15), and the pressurized storage tank (15) stores a fire extinguishing fluid inside.

6. The flame retardant generating device for new energy batteries according to claim 5, characterized in that: The outlet assembly comprises a flexible conduit (16), the outer surface of the output port of the pressurized storage tank (15) is connected to the flexible conduit (16), a switch valve (17) is fixedly arranged inside the flexible conduit (16), the outer surface of the sealing plate (7) is fixedly arranged with a curved tube (18), the end surface of the flexible conduit (16) is connected to the inside of the curved tube (18), the outer surface of the curved tube (18) is fixedly arranged with a plurality of outlet tubes (19), and the ends of the outlet tubes (19) extend to the bottom end surface of the sealing plate (7).

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