Two-wheeled vehicle battery flame-retardant system

Abstract

The utility model discloses a two-wheeled vehicle battery flame-retardant system, and particularly relates to the field of battery flame retardance, the two-wheeled vehicle battery flame-retardant system comprises a battery box, a battery pack is arranged in a battery, the top of the battery pack is provided with a limiting plate, the inner wall of the bottom of the limiting plate is connected with a flame-retardant layer, and the flame-retardant layer comprises a flame-retardant shell, a flame retardant, a flow guide port and a barrier film. One side of the battery box is connected with a fire extinguishing liquid box, one side of the fire extinguishing liquid box is communicated with a guide pipe, one end of the guide pipe is communicated with a flow dividing pipe, the bottom of the flow dividing pipe is communicated with spraying pipes, and the bottom ends of the spraying pipes are connected with sprayers; when the battery pack is ignited, the high temperature of combustion melts the barrier film at the corresponding position, the flame retardant flows out from the position of the flow guide port so as to flow out from the ignition position, so that the flame retardant effect is achieved, and meanwhile, the spraying pipe and the spray head are matched for spraying, so that the combustion process is inhibited; the safety of the battery is improved through active flame retardance and passive flame retardance, and greater loss is avoided.

Description

Technical Field

[0001] This utility model relates to the field of battery flame retardancy, and more specifically, to a flame retardant system for two-wheeled vehicle batteries. Background Technology

[0002] In two-wheeled electric vehicles and other energy storage applications, multiple battery cells are usually connected in series or parallel in different forms to form a battery device to provide the required voltage and capacity. During the charging and discharging process, the internal chemical reaction of the battery is complex and accompanied by heat generation. Especially for devices composed of multiple battery cells, the temperature accumulates faster, causing the internal temperature of the battery to rise and leading to battery damage.

[0003] A search revealed an existing patent (publication number: CN107394313A) that discloses a flame-retardant battery system with a simple structure, easy fabrication, and good flame-retardant effect. This system includes a battery, a housing, and a coolant, as well as battery contacts, a connector, a pressure relief valve, a solenoid valve, a heat sink, and a total positive / total negative interface. The battery, battery contacts, and connector are connected and immersed in the coolant. The coolant comprises a pure fluorocarbon compound, a mixture of fluorocarbon compound and transformer oil, or a mixture of fluorocarbon compound and silicone oil, wherein the fluorocarbon compound has a boiling point above 80°C and is chlorine-free. During the development of this invention, the inventors discovered the following problems with the existing technology:

[0004] Current flame-retardant systems for two-wheeled vehicle batteries often only provide a single flame-retardant effect when the battery heats up and burns. They typically only have one flame-retardant mechanism. When encountering malfunctions or delays, the battery cannot be effectively flame-retarded, which can lead to rapid combustion and reduce the subsequent flame-retardant effect.

[0005] Therefore, a flame-retardant system for two-wheeled vehicle batteries is proposed to address the above issues. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a flame-retardant system for two-wheeled vehicle batteries to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a flame-retardant battery system for two-wheeled vehicles, including a battery box. The bottom inner wall of the battery box is lined with fireproof cotton, and a battery pack is mounted on top of the fireproof cotton. Limiting grooves are arranged along the inner wall of the edge of the battery box. A limiting plate is mounted on top of the battery pack. A slider is connected to the edge of the limiting plate and is embedded in the limiting groove. When the limiting plate moves, the slider can slide within the limiting groove. A flame-retardant layer is connected to the bottom inner wall of the limiting plate. The flame-retardant layer includes a flame-retardant shell, a flame-retardant agent, a flow guide, and a blocking membrane. The inner cavity of the flame-retardant shell is filled with a flame retardant, and the bottom of the flame retardant is provided with flow guides, which correspond sequentially to the batteries in the battery pack. A blocking membrane is provided in the middle of the flow guides. Through holes are arranged in the middle of the limiting plate and the flame-retardant layer. A fire extinguishing liquid tank is connected to one side of the battery box. A conduit is connected to one side of the fire extinguishing liquid tank. A micro pump is provided in the middle of the conduit. The end of the conduit away from the fire extinguishing liquid tank extends to the top of the limiting plate and is connected to a diversion pipe. Spray pipes are arranged in the bottom of the diversion pipe and connected to a nozzle through a through hole.

[0008] Preferably, each of the multiple sets of spray pipes is provided with a solenoid valve in the middle, and temperature sensors are arranged on the top of the battery pack, with the temperature sensors matching the number and position of the battery cells in the battery pack.

[0009] Preferably, a controller is provided on one side of the fire extinguishing liquid tank, and the controller is connected to the temperature sensor, solenoid valve and micro pump via wires.

[0010] Preferably, the outer wall of the battery box is fitted with an outer frame, and the inner walls on both sides of the outer frame are provided with slide rails.

[0011] Preferably, both outer walls of the battery box are connected to slide bars, which are embedded in slide tracks. When the battery box is moved out, the slide bars can be driven to slide in the slide tracks.

[0012] Preferably, an explosion-proof valve is provided on the top side of the outer frame, and a filter box is provided on the top of the explosion-proof valve. The interior of the filter box is filled with an activated carbon adsorption layer.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. Compared with existing technologies, this two-wheeled vehicle battery flame-retardant system, when a battery cell in the battery pack ignites due to abnormal temperature, causes the temperature inside the battery box to rise. The barrier film, made of a material with a low ignition point, melts the barrier film at the corresponding location due to the high temperature of combustion. After the barrier film melts, the flame retardant inside the flame-retardant shell flows out through the guide port to the fire location, thus playing a flame-retardant role. At the same time, a micro pump draws the extinguishing liquid from the extinguishing liquid tank into the conduit. The extinguishing liquid extends through the conduit into the branch pipe and is then conducted to the corresponding spray pipe and nozzle for spraying. The extinguishing liquid can form foam or other covering layers on the surface of the burning battery, blocking the contact between oxygen and flame, thereby inhibiting the combustion process. Through active and passive flame retardancy, the safety of the battery is improved, avoiding greater losses. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the internal structure of the battery box of this utility model.

[0016] Figure 2 This is a schematic diagram of the connection structure between the battery box and the limiting plate of this utility model.

[0017] Figure 3 This is a schematic diagram of the flame-retardant layer structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the connection structure between the battery box and the outer frame of this utility model.

[0019] The attached diagram is labeled as follows: 1. Battery box; 2. Fireproof cotton; 3. Battery pack; 4. Limiting groove; 5. Limiting plate; 6. Slider; 7. Flame retardant layer; 71. Flame retardant shell; 72. Flame retardant; 73. Flow guide; 74. Barrier membrane; 8. Through hole; 9. Fire extinguishing liquid tank; 10. Conduit; 11. Micro pump; 12. Diverter pipe; 13. Sprinkler pipe; 14. Sprinkler head; 15. Solenoid valve; 16. Temperature sensor; 17. Controller; 18. Outer frame; 19. Slide rail; 20. Slide bar; 21. Explosion-proof valve; 22. Filter box; 23. Activated carbon adsorption layer. Detailed Implementation

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

[0021] Example 1

[0022] As attached Figures 1 to 3The two-wheeled vehicle battery flame-retardant system shown includes a battery box 1. The bottom inner wall of the battery box 1 is lined with fireproof cotton 2, and the top of the fireproof cotton 2 is fitted with a battery pack 3. Limiting grooves 4 are arranged along the inner wall of the edge of the battery box 1. A limiting plate 5 is fitted on the top of the battery pack 3. A slider 6 is connected to the edge of the limiting plate 5 and is embedded in the limiting groove 4. When the limiting plate 5 moves, the slider 6 can slide within the limiting groove 4. A flame-retardant layer 7 is connected to the bottom inner wall of the limiting plate 5. The flame-retardant layer 7 includes a flame-retardant shell 71, a flame retardant 72, a flow guide 73, and a blocking film 74. The inner cavity of the flame-retardant shell 71 is filled with the flame retardant 72. The bottom of the fuel 72 is provided with flow guide ports 73, which correspond sequentially to the batteries in the battery pack 3. A blocking membrane 74 is provided in the middle of the flow guide port 73. Through holes 8 are arranged in the middle of the limiting plate 5 and the flame retardant layer 7. A fire extinguishing liquid tank 9 is connected to one side of the battery box 1. A conduit 10 is connected to one side of the fire extinguishing liquid tank 9. A micro pump 11 is provided in the middle of the conduit 10. The end of the conduit 10 away from the fire extinguishing liquid tank 9 extends to the top of the limiting plate 5 and is connected to a diversion pipe 12. A spray pipe 13 is arranged at the bottom of the diversion pipe 12. The end of the spray pipe 13 away from the diversion pipe 12 passes through the through hole 8 and is connected to a nozzle 14.

[0023] Among them: Battery box 1 serves to install battery pack 3; fireproof cotton 2 is a polyurethane foam material with added flame retardants, which has good fireproof performance, can undergo phase change and absorb heat at high temperatures, and form a carbonized heat insulation layer, effectively preventing the spread of fire; limiting plate 5 serves to fix and limit; when limiting plate 5 moves, it can drive slider 6 to slide in limiting groove 4, thus facilitating the removal of limiting plate 5; when a battery cell in battery pack 3 ignites due to abnormal temperature, the temperature inside battery box 1 rises; the blocking film 74 is a material with a low ignition point, and the high temperature of combustion will melt the blocking film 74 at the corresponding position. After the flame retardant 74 melts, the flame retardant 72 inside the flame retardant shell 71 flows out through the guide port 73 and flows out to the fire location, thus playing a flame retardant role. At the same time, the fire extinguishing liquid in the fire extinguishing liquid tank 9 can be pumped into the conduit 10 by the micro pump 11. The fire extinguishing liquid extends through the conduit 10 into the branch pipe 12 and is then conducted to the corresponding spray pipe 13 and nozzle 14 for spraying. The fire extinguishing liquid can form foam or other covering layers on the surface of the burning battery, blocking the contact between oxygen and flame, thereby inhibiting the combustion process. Through active flame retardancy and passive flame retardancy, the safety of the battery is improved, avoiding greater losses.

[0024] Example 2

[0025] Based on Example 1, the solution in Example 1 will be further described in detail below with reference to the specific working method, such as... Figures 1 to 4 As shown below, see details:

[0026] In a preferred embodiment, a solenoid valve 15 is provided in the middle of each of the multiple spray pipes 13, and a temperature sensor 16 is arranged on the top of the battery pack 3. The temperature sensor 16 is matched with the number and position of the battery cells in the battery pack 3. Furthermore, the temperature sensor 16 can detect the battery temperature at different positions of the current battery pack in real time. By opening the solenoid valve 15 at the corresponding position, the heat source can be accurately sprayed with flame retardant to avoid waste.

[0027] In a preferred embodiment, a controller 17 is provided on one side of the fire extinguishing liquid tank 9. The controller 17 is connected to the temperature sensor 16, the solenoid valve 15, and the micro pump 11 via wires. Furthermore, when a set of temperature sensors 16 detects abnormal overheating of the battery, it can transmit a signal to the controller 17. The controller 17 controls the solenoid valve 15 at the corresponding position to open and simultaneously controls the micro pump 11 to start. The micro pump 11 can pump the fire extinguishing liquid in the fire extinguishing liquid tank 9 into the conduit 10. The fire extinguishing liquid extends through the conduit 10 into the diversion pipe 12 and is then conducted to the spray pipe 13 and the nozzle 14 at the corresponding position for spraying. This can actively extinguish the flame before the battery pack 3 is ignited, avoiding greater losses caused by the combustion of the battery pack.

[0028] In a preferred embodiment, the outer wall of the battery box 1 is fitted with an outer frame 18, and the inner walls on both sides of the outer frame 18 are provided with slide rails 19; furthermore, the outer frame 18 plays a protective role, and plays a buffering and strengthening role in the collision of the electric vehicle during driving, thereby preventing the battery pack 3 from being deformed by the collision and thus burning.

[0029] In a preferred embodiment, both sides of the outer wall of the battery box 1 are connected to slide bars 20. The slide bars 20 are embedded in the slide rail 19. When the battery box 1 is moved out, the slide bars 20 can slide in the slide rail 19. Furthermore, pulling the battery box 1 can move it out of the outer frame 18 to facilitate the replacement of the battery pack 3. The slide bars 20 slide in the slide rail 19 to play a limiting role.

[0030] In a preferred embodiment, an explosion-proof valve 21 is provided on the top side of the outer frame 18, and a filter box 22 is provided on the top of the explosion-proof valve 21. The filter box 22 is filled with an activated carbon adsorption layer 23. Furthermore, when the internal pressure of the battery exceeds a preset safety value, the explosion-proof valve 21 will automatically open to release the gas accumulated inside, reduce the pressure, and prevent the battery from rupturing or exploding. At the same time, the activated carbon adsorption layer 23 can adsorb and filter a certain amount of harmful gases in the smoke produced by combustion, avoiding the direct discharge of harmful gases that could lead to human inhalation or environmental impact.

[0031] The working process of this utility model is as follows: First, the battery pack 3 is installed in the battery box 1. When a battery cell in the battery pack 3 ignites due to abnormal temperature, the fireproof cotton 2 can undergo a phase change and absorb heat at high temperature, forming a carbonized heat insulation layer, effectively preventing the spread of fire. At the same time, the temperature inside the battery box 1 rises. The barrier film 74 is a material with a low ignition point. The high temperature of combustion will melt the barrier film 74 at the corresponding position. After the barrier film 74 melts, the flame retardant 72 in the flame retardant shell 71 will flow out through the guide port 73 and thus flow out to the fire position, thereby playing a flame retardant role. At the same time, the fire extinguishing liquid in the fire extinguishing liquid tank 9 can be pumped into the conduit 10 by the micro pump 11. The fire extinguishing liquid extends through the conduit 10 to the branch pipe 12 and is then conducted to the spray pipe 13 and nozzle 14 at the corresponding position for spraying. The fire extinguishing liquid can form foam or other covering layers on the surface of the burning battery, blocking the contact between oxygen and flame, thereby inhibiting the combustion process. The safety of the battery is improved through active flame retardancy and passive flame retardancy. To prevent greater losses, when a set of temperature sensors 16 detects abnormal overheating of the battery, it can transmit a signal to the controller 17. The controller 17 controls the opening of the corresponding solenoid valve 15 and simultaneously controls the start of the micro pump 11. The micro pump 11 draws the extinguishing liquid in the extinguishing liquid tank 9 into the conduit 10. The extinguishing liquid extends through the conduit 10 into the diversion pipe 12 and is then conducted to the corresponding spray pipe 13 and nozzle 14 for spraying. This can actively retard the flame before the battery pack 3 ignites, preventing the battery pack from burning and causing greater losses. When the internal pressure of the battery exceeds the preset safety value, the explosion-proof valve 21 will automatically open to release the accumulated gas inside, reduce the pressure, and prevent the battery from rupturing or exploding. At the same time, the activated carbon adsorption layer 23 can adsorb and filter certain harmful gases in the smoke produced by combustion, preventing the direct discharge of harmful gases that could be inhaled by humans or affect the environment. The above is the working principle of the two-wheeled vehicle battery flame-retardant system.

Claims

1. Two-wheeler battery fire retardant system comprising of a battery box (1) characterized by: The bottom inner wall of the battery box (1) is provided with fireproof cotton (2), the top of the fireproof cotton (2) is provided with a battery pack (3), the inner wall of the edge of the battery box (1) is arranged with a limiting groove (4), the top of the battery pack (3) is provided with a limiting plate (5), the edge of the limiting plate (5) is connected with a sliding block (6), the sliding block (6) is embedded in the limiting groove (4), when the limiting plate (5) moves, the sliding block (6) can slide in the limiting groove (4), the bottom inner wall of the limiting plate (5) is connected with a fire-retardant layer (7), the fire-retardant layer (7) comprises a fire-retardant shell (71), a fire retardant (72), a flow guide port (73) and a blocking film (74), the inner cavity of the fire-retardant shell (71) is provided with the fire retardant (72), the bottom of the fire retardant (72) is arranged with the flow guide port (73), the flow guide port (73) corresponds to the batteries in the battery pack (3) in sequence, the middle part of the flow guide port (73) is provided with the blocking film (74), the limiting plate (5) and the middle part of the fire-retardant layer (7) are arranged with a through hole (8), one side of the battery box (1) is connected with a fire extinguishing liquid tank (9), one side of the fire extinguishing liquid tank (9) is communicated with a conduit (10), the middle part of the conduit (10) is provided with a micro pump (11), one end of the conduit (10) away from the fire extinguishing liquid tank (9) extends to the top of the limiting plate (5) and is communicated with a shunt pipe (12), the bottom of the shunt pipe (12) is arranged and communicated with a spray pipe (13), one end of the spray pipe (13) away from the shunt pipe (12) is connected with a spray head (14) through the through hole (8).

2. The two-wheeler battery fire-retardant system as claimed in claim 1 wherein: The middle part of the plurality of spray pipes (13) is provided with an electromagnetic valve (15), the top of the battery pack (3) is arranged with a temperature sensor (16), the temperature sensor (16) matches the position of the number of battery units in the battery pack (3).

3. The two-wheeler battery fire-retardant system as claimed in claim 2, wherein: One side of the fire extinguishing liquid tank (9) is provided with a controller (17), the controller (17) is connected with the temperature sensor (16), the electromagnetic valve (15) and the micro pump (11) through wires.

4. The two-wheeler battery fire-retardant system as claimed in claim 1 wherein: The outer wall of the battery box (1) is sleeved with an outer frame (18), the inner wall of the both sides of the outer frame (18) is provided with a slide way (19).

5. The two-wheeler battery fire-retardant system as claimed in claim 4, wherein: The outer wall of the both sides of the battery box (1) is connected with a sliding strip (20), the sliding strip (20) is embedded in the slide way (19), when the battery box (1) moves out, the sliding strip (20) can slide in the slide way (19).

6. The two-wheeler battery fire-retardant system as claimed in claim 4, wherein: One side of the top of the outer frame (18) is provided with an explosion-proof valve (21), the top of the explosion-proof valve (21) is provided with a filter box (22), the inside of the filter box (22) is filled with an activated carbon adsorption layer (23).

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