Automobile emergency power supply battery module flame-retardant device based on thermal trigger expansion
This automotive emergency power battery module flame-retardant device, which uses a low-melting-point alloy sheet to cut off electrical connections, an expansion phase change flame-retardant bag for heat insulation, a shape memory metal box for fire extinguishing, and an active pressure relief component to release gas, solves the problem of secondary disasters during thermal runaway in existing technologies. It achieves rapid heat insulation, cooling, and fire extinguishing, reducing overall hazards.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUANGDONG CHUYUAN HOME TECH CO LTD
- Filing Date
- 2026-02-06
- Publication Date
- 2026-05-08
AI Technical Summary
Existing flame-retardant devices for automotive emergency power battery modules based on thermally triggered expansion cannot effectively suppress internal chemical reactions during thermal runaway. After high-temperature flammable gases are ejected, they may be ignited by external ignition sources, forming jet fires. Furthermore, they cannot be effectively cooled and extinguished, posing a risk of secondary disasters.
It employs a low-melting-point alloy sheet to cut off electrical connections, an expansion phase change flame-retardant bag for heat insulation, a shape memory metal box for precise fire extinguishing, an active pressure relief component to release gas, a cooling protection component for forced convection cooling, a linkage acceleration component to improve cooling efficiency, and a micro dual-axis motor to drive pressure relief and release of extinguishing agent.
It effectively prevents the supply of energy for thermal runaway, provides rapid heat insulation and fire extinguishing, reduces the risk of secondary fires, improves cooling efficiency, avoids shell explosion, reduces extinguishing agent pollution and cleanup difficulties, and reduces overall hazard.
Smart Images
Figure CN122000507A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of flame retardant technology for automotive emergency power supplies, and more specifically, to a flame retardant device for automotive emergency power supply battery modules based on thermally triggered expansion. Background Technology
[0002] With the widespread application of lithium-ion battery packs in automotive emergency power supplies, new energy vehicles and energy storage systems, their thermal runaway safety issues are becoming increasingly prominent. Under abuse conditions such as overcharging, short circuits, and mechanical damage, lithium-ion battery packs can trigger internal chain exothermic reactions, leading to a sharp rise in temperature (thermal runaway), accompanied by the generation of a large amount of flammable gas, jet fire, or even explosion, seriously threatening personal and property safety. Currently, existing flame-retardant devices for automotive emergency power battery modules based on thermally triggered expansion have the following shortcomings in use: While using high-strength metal or composite material shells to attempt to confine thermal runaway within the battery pack, the high-pressure gas generated by thermal runaway can easily cause the shell to burst, triggering secondary disasters. Furthermore, simple sealing cannot suppress internal heat spread. Filling the spaces between battery blocks with expandable graphite, aluminum hydroxide, or other materials, which expand upon heating to form a heat insulation layer, only provides physical isolation and lacks active cooling and fire extinguishing functions. Pre-set weak points or one-way valves in the battery pack shell release internal gas during overpressure, which is merely a pressure release and cannot suppress internal chemical reactions. The high-temperature flammable gas ejected may be ignited by an external ignition source, forming a jet fire. After depressurization, oxygen may flow back, intensifying combustion.
[0003] The existing flame-retardant device for automotive emergency power battery modules based on thermally triggered expansion has the above-mentioned problems. In view of this, we propose a flame-retardant device for automotive emergency power battery modules based on thermally triggered expansion. Summary of the Invention
[0004] The purpose of this invention is to provide a flame-retardant device for automotive emergency power battery modules based on thermally triggered expansion, in order to overcome the above-mentioned defects in the prior art.
[0005] This invention is achieved through the following technical solutions; This invention discloses a flame-retardant device for an automotive emergency power supply battery module based on thermally triggered expansion. The device includes an emergency power supply body, a control panel mounted at one end, and an exhaust fan, a blower, and a light mounted at the other end. A power handle is fixedly mounted at the upper end of the emergency power supply body. A battery block module assembly is installed inside the emergency power supply body. The battery block module assembly includes an arc-shaped cooling well fixedly mounted at the bottom of the emergency power supply body. Multiple battery blocks are horizontally distributed along the inner side of the arc-shaped cooling well. Each battery block has two conductive heads mounted on its upper end, with multiple conductive heads on each side. The middle of each conductive head is fitted with a low-melting-point alloy sheet. A fire extinguishing and heat insulation component is movably installed inside the emergency power supply body. The fire extinguishing and heat insulation component includes a shape memory metal box movably installed inside the emergency power supply body. A discharge port is opened at the upper end of the shape memory metal box. A guide displacement component is fixedly installed inside the emergency power supply body. An active pressure relief component is fixedly connected inside the emergency power supply body. The active pressure relief component includes an operating box fixedly connected to the inner wall of the emergency power supply body. A cooling protection component is rotatably installed on the inner side of the arc-shaped cooling well. A linkage acceleration component is rotatably installed at the upper end of the arc-shaped cooling well.
[0006] Preferably, an expansion phase change flame retardant bag is provided between each of the multiple battery blocks, and an installation rod is fixedly connected to both ends of each of the multiple expansion phase change flame retardant bags. Each of the multiple installation rods is fixedly connected to the inner wall of the emergency power supply body, and a cooling mesh box is provided between each of the multiple battery blocks.
[0007] Preferably, multiple heat sinks are interspersed on one side of the arc-shaped cooling well, and a condenser is installed inside the emergency power supply body. The condenser works in conjunction with the heat sinks.
[0008] Preferably, the guide displacement assembly includes two open beams fixedly connected to the inner wall of the emergency power supply body, a slider is slidably installed in the middle of each of the two open beams, both sliders are fixedly connected to the memory metal box, and a threaded block is fixedly connected to the bottom end of each slider.
[0009] Preferably, a reciprocating screw is rotatably mounted at the bottom end of each of the two open beams, and a worm gear is fixedly fitted at one end of each of the two reciprocating screws that passes through the open beams. A miniature dual-axis motor II is fixedly mounted on one side of the control box, and a rotating shaft II is rotatably mounted at both ends of the miniature dual-axis motor II. A worm gear is fixedly connected to the side of each of the two rotating shaft II that is far apart from each other. The worm gear meshes with the worm gear. Both worm gears are rotatably connected to the inner wall of the emergency power supply body. The two threaded blocks are respectively fitted with the reciprocating screw.
[0010] Preferably, the cooling protection assembly includes multiple traction shafts rotatably installed inside the arc-shaped cooling well. A conveyor belt is installed on the outer surface of the multiple traction shafts. Multiple conveyor teeth are fixedly connected to both sides of the conveyor belt, and the inner conveyor teeth are slidably disposed with the inner wall of the arc-shaped cooling well.
[0011] Preferably, the linkage acceleration component includes a traction main shaft rotatably mounted on one side of the arc-shaped cooling well, a secondary gear is fixedly fitted on the upper end of the traction main shaft, and the inner wall of the conveyor belt is provided with multiple tooth grooves that mesh with the traction main shaft.
[0012] Preferably, a flame-retardant cover is fitted on the outer side of the multiple battery blocks. A buckle plate is fitted on the outer surface of the flame-retardant cover. A miniature dual-axis motor is vertically fixed on one side of the buckle plate. A rotating shaft is installed at both ends of the miniature dual-axis motor. A main gear that meshes with a secondary gear is fitted on the outer surface of the lower rotating shaft.
[0013] Preferably, two pressure relief pipes are fixedly connected to the upper end of the control box, and both pressure relief pipes are inserted through the emergency power supply body. Pressure relief cylinders are inserted through both sides of the control box, and pressure relief pistons are slidably installed on the inner side of both pressure relief cylinders. A piston rod is rotatably connected to the upper end of both pressure relief pistons. A hollow cylinder is installed in the middle of the upper end of the control box. A swing device is rotatably mounted on the upper end of the hollow cylinder. A guide pin block is fixedly mounted in the middle of the swing device. Limit pins are hinged on both sides of the guide pin block. The two limit pins are rotatably connected to the piston rods respectively. A hollow cylinder is rotatably connected to the upper end of the swing device. The hollow cylinder is fixedly connected to the emergency power supply body. A driven door is movably provided on one side of each of the two pressure relief pipes. The driven door abuts against the pressure relief piston.
[0014] Preferably, a rotating shaft is rotatably installed in the middle of the control box. The rotating shaft passes through a hollow cylinder and is fixedly connected to a guide pin block. A main gear is fixedly fitted at one end of the rotating shaft passing through the control box. A rotating shaft seat is rotatably installed at the bottom of each of the two pressure relief cylinders. Fan blades are fixedly fitted at the lower part of each of the two rotating shaft seats. A secondary gear is fixedly fitted at the lower part of each of the two rotating shaft seats. Both secondary gears mesh with the main gear.
[0015] The beneficial effects of this invention are: In a flame-retardant device for automotive emergency power battery modules based on thermally triggered expansion according to the present invention, when the battery block begins to heat up abnormally due to a fault, the heat generated first acts on the low-melting-point alloy sheet connecting the series circuit of the battery block. When the alloy sheet reaches a specific temperature, it melts rapidly, physically cutting off the electrical connection between the battery blocks and preventing electrical energy from continuing to be input to the fault point, thus curbing the energy supply for thermal runaway from the source. At the same time, the heat is conducted to the adjacent expanding phase change flame-retardant bag. The phase change material inside the bag absorbs heat and melts, accompanied by volume expansion, forming a preliminary wrapping and heat insulation for the battery block, delaying heat diffusion. The thermal runaway reaction continues to generate a large amount of high-temperature and high-pressure gas, causing the internal pressure of the emergency power supply body to rise sharply.
[0016] 2. In the flame-retardant device for automotive emergency power battery modules based on thermally triggered expansion of the present invention, a micro dual-axis motor drives the upper and lower rotating shafts to rotate synchronously, causing the main gear to rotate and the secondary gear to follow suit. This, in turn, drives the two rotating shaft seats to rotate, and the fan blades draw high-pressure gas into the active pressure relief assembly through a preset channel, pushing the pressure relief piston inside to move. The fan blades rotate at high speed, accelerating the external circulation of gas inside the emergency power supply body. Through the exhaust fan and blower, the heat dissipation outside the shell is enhanced. The piston movement is converted into the rotational movement of the guide pin block on the hollow cylinder 1 and hollow cylinder 2 through the piston rod, limit pin and other linkage mechanism. This, in turn, drives the swing device to rotate synchronously with the rotating shaft 1. When the pressure relief piston moves back and forth upward in the pressure relief cylinder, it contacts the driven door, allowing the internal high-pressure gas to be transported into the pressure relief pipe for orderly release, thus preventing the shell from exploding.
[0017] 3. In the flame-retardant device for automotive emergency power battery modules based on thermally triggered expansion of this invention, the coolant in the arc-shaped cooling well is forcibly agitated by a conveyor belt and conveyor teeth, completely breaking the thermal boundary layer under natural convection, increasing cooling efficiency by an order of magnitude, and rapidly dissipating the core heat from the bottom of the battery block, a high-risk area for thermal runaway. For fire extinguishing, the guide displacement component guides the shape memory metal box to move precisely above the faulty battery block along the open beam, releasing extinguishing agent point-to-point through the discharge port. This allows for faster and more effective fire extinguishing with minimal extinguishing agent usage, greatly reducing equipment pollution, cleaning difficulties, and high costs caused by large amounts of extinguishing agent. Furthermore, the entire pressure relief process is controlled and directional through the pressure relief pipe and driven door, preventing the disorderly spraying of high-temperature flammable gas from causing secondary fires or injury to surrounding personnel and equipment, systematically reducing the secondary risks and overall hazards of thermal runaway events. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is the invention Figure 1 Mid-side view of the external structure; Figure 3 This is the present invention. Figure 2 Internal schematic diagram (section view); Figure 4 This is the present invention. Figure 3 Schematic diagram of the overall internal structure; Figure 5 This is the present invention. Figure 4 Schematic diagram of the structure of the battery block module assembly and cooling protection assembly; Figure 6 This is the present invention. Figure 5 Schematic diagram of a multi-component structure; Figure 7 This is the present invention. Figure 3 Schematic diagram of the active pressure relief component; Figure 8 This is the present invention. Figure 7 Schematic diagram of the cross-sectional structure of the central control box; Figure 9 This is a schematic diagram of the emergency jump-start motor clamp in this invention.
[0021] In the diagram: 1. Emergency power supply body; 2. Power handle; 3. Control panel; 4. Exhaust fan; 5. Emergency jump-start socket; 51. Emergency jump-start electrode clamp; 551. Battery module assembly; 552. Fire extinguishing and heat insulation assembly; 553. Guide displacement assembly; 554. Active pressure relief assembly; 555. Cooling protection assembly; 556. Linkage acceleration assembly; 6. Blower; 7. Lighting lamp; 8. Pressure relief pipe; 9. Open beam; 10. Slider; 11. Threaded block; 12. Discharge port; 13. Battery block; 14. Low melting point alloy sheet; 15. Control box; 16. Miniature dual-axis motor; 17. Rotating shaft; 18. Main gear; 19. Condenser; 20. Arc-shaped cooling well; 21. Snap-on plate 22. Pressure relief piston; 23. Pressure relief cylinder; 24. Hollow cylinder one; 25. Guide pin block; 26. Limit pin; 27. Piston rod; 28. Oscillator; 29. Hollow cylinder two; 30. Main gear two; 31. Driven door; 32. Shaft seat; 33. Secondary gear two; 34. Fan blade; 35. Conveyor belt; 36. Conveyor gear; 37. Flame retardant cover; 38. Conductive head; 39. Memory metal box; 40. Miniature dual-shaft motor two; 41. Shaft two; 42. Traction main shaft; 43. Secondary gear one; 44. Cooling mesh box; 45. Mounting rod; 46. Expansion phase change flame retardant bag; 47. Gear groove; 48. Reciprocating screw; 49. Turbine; 50. Worm gear; 57. Traction secondary shaft; 58. Heat sink. Detailed Implementation
[0022] The following is combined Figure 1-8 The present invention will be described in detail below. For ease of description, the directions referred to below are defined as follows: the directions of up, down, left, right, front, and back mentioned below are the same as... Figure 1 The directions of the projection relationship are consistent in all directions: up, down, left, right, front, and back.
[0023] Referring to Figures 1-8, a flame-retardant device for an automotive emergency power supply battery module based on thermally triggered expansion includes an emergency power supply body 1. Inside the emergency power supply body 1, a battery block module assembly 551 is installed. The battery block module assembly 551 includes an arc-shaped cooling well 20 fixedly installed at the bottom of the emergency power supply body 1. Multiple battery blocks 13 are horizontally distributed and installed on the inner side of the arc-shaped cooling well 20. Two conductive heads 38 are installed at the top of each of the multiple battery blocks 13. A low-melting-point alloy sheet 14 is commonly fitted in the middle of the multiple conductive heads 38 on each side. A fire-extinguishing and heat-insulating assembly 552 is movably disposed inside the emergency power supply body 1. The fire-extinguishing and heat-insulating assembly 552 includes a shape memory metal box 39 movably disposed inside the emergency power supply body 1. The upper end of the box 39 is provided with a discharge port 12. The emergency power supply body 1 is fixedly installed with a guide displacement component 553. The emergency power supply body 1 is fixedly connected with an active pressure relief component 554. The active pressure relief component 554 includes an operation box 15 fixedly connected to the inner wall of the emergency power supply body 1. The inner side of the arc-shaped cooling well 20 is rotatably installed with a cooling protection component 555. The upper end of the arc-shaped cooling well 20 is rotatably installed with a linkage acceleration component 556. Expansion phase change flame retardant bags 46 are provided between multiple battery blocks 13. The two ends of the multiple expansion phase change flame retardant bags 46 are fixedly connected with mounting rods 45. The multiple mounting rods 45 are fixedly connected to the inner wall of the emergency power supply body 1. Cooling mesh boxes 44 are provided between multiple battery blocks 13.
[0024] The above technical solution is as follows: When the battery block 13 starts to heat up abnormally due to a fault, the heat it generates first acts on the low melting point alloy sheet 14 that connects the series circuit of the battery block. When the alloy sheet reaches a specific temperature, it melts rapidly, physically cutting off the electrical connection between the battery blocks and preventing electrical energy from continuing to be input to the fault point, thus curbing the energy supply for thermal runaway from the source. At the same time, the heat is conducted to the adjacent expansion phase change flame retardant bag 46. The phase change material inside the bag absorbs heat and melts, accompanied by volume expansion, forming a preliminary wrapping and heat insulation for the battery block, delaying heat diffusion. The thermal runaway reaction continues to generate a large amount of high temperature and high pressure gas, causing the internal pressure of the emergency power supply body 1 to rise sharply.
[0025] A further technical solution includes multiple heat sinks 58 interspersed on one side of the arc-shaped cooling well 20, a condenser 19 installed inside the emergency power supply body 1, the condenser 19 working in conjunction with the heat sinks 58, a cooling protection component 555 including multiple traction shafts 57 rotatably mounted inside the arc-shaped cooling well 20, a conveyor belt 35 mounted on the outer surface of the multiple traction shafts 57, multiple conveyor teeth 36 fixedly connected to both sides of the conveyor belt 35, the inner conveyor teeth 36 slidingly disposed against the inner wall of the arc-shaped cooling well 20, and a linkage acceleration component 556 including a rotating mounting... A traction main shaft 42 is mounted on one side of the arc-shaped cooling well 20. A secondary gear 43 is fixedly mounted on the upper end of the traction main shaft 42. Multiple tooth grooves 47 that mesh with the traction main shaft 42 are opened on the inner wall of the conveyor belt 35. A flame-retardant cover 37 is mounted on the outer side of multiple battery blocks 13. A buckle plate 21 is mounted on the outer surface of the flame-retardant cover 37. A miniature dual-axis motor 16 is vertically fixed on one side of the buckle plate 21. A rotating shaft 17 is mounted on both ends of the miniature dual-axis motor 16. A main gear 18 that meshes with the secondary gear 43 is mounted on the outer surface of the lower rotating shaft 17.
[0026] The above technical solution involves: a micro dual-axis motor 16 driving the main gear 18 to rotate; the main gear 18 driving the secondary gear 43 and the traction main shaft 42; the traction main shaft 42 driving the toothed groove 47; and finally driving the conveyor belt 35 to rotate around the traction secondary shaft 57. The conveyor teeth 36 on the conveyor belt 35 violently agitate the coolant in the arc-shaped cooling well 20, breaking the thermal boundary layer and achieving forced convection of the coolant. The coolant in the cooling mesh box 44 can also flow fully, quickly carrying the heat accumulated at the bottom of the battery block to the heat sink 58 on the condenser 19 for dissipation. The coolant is continuously flowed by the conveyor teeth 36, thereby implementing active and efficient cooling of the battery block from the inside.
[0027] A further technical solution includes a guide displacement assembly 553 comprising two open beams 9 fixedly connected to the inner wall of the emergency power supply body 1. A slider 10 is slidably mounted in the middle of each of the two open beams 9. Both sliders 10 are fixedly connected to a memory metal box 39. A threaded block 11 is fixedly connected to the bottom of each slider 10. A reciprocating screw 48 is rotatably mounted at the bottom of each of the two open beams 9. A worm gear 49 is fixedly fitted at one end of each reciprocating screw 48 passing through the open beams 9. A miniature dual-axis motor 40 is fixedly mounted on one side of the control box 15. A rotating shaft 41 is rotatably mounted at both ends of the miniature dual-axis motor 40. A worm gear 50 is fixedly connected to the side of each rotating shaft 41 that is far apart from the other. The worm gear 49 meshes with the worm gear 50. Both worm gears 50 are rotatably connected to the inner wall of the emergency power supply body 1. Two threaded blocks 11 are respectively fitted to the reciprocating screw 48.
[0028] The above technical solution is achieved by: the micro dual-axis motor 40 automatically starts and drives the rotating shaft 41 to rotate, and the worm gear 50 follows suit, which in turn drives the turbine 49 to rotate, and the reciprocating screw 48 also follows suit. Under the guidance of the guide displacement component 553, the threaded block 11 moves on the reciprocating screw 48 until it reaches the heat source. The slider 10 slides along the open beam 9, which moves the shape memory metal box 39 on it to the top of the heat source battery block. While the pressure drives the mechanical system, the high temperature also acts on the shape memory metal box 39. When the temperature exceeds its deformation threshold, the shape memory metal box 39 recovers its shape. The dry powder or vaporized liquid extinguishing agent inside the box is accurately released to the ignition point through the discharge port 12 to achieve rapid chemical suppression. At the same time, the flame-retardant cover 37 and the buckle plate 21 around the battery block are further tightened under the action of heat or linkage, forming a multi-layer physical isolation layer together with the expansion phase change flame-retardant bag 46 to prevent the spread of flames.
[0029] A further technical solution includes two pressure relief pipes 8 fixedly connected to the upper end of the control box 15, both of which are inserted into the emergency power supply body 1. Pressure relief cylinders 23 are inserted into both sides of the control box 15, and pressure relief pistons 22 are slidably installed inside each of the two pressure relief cylinders 23. A piston rod 27 is rotatably connected to the upper end of each of the two pressure relief pistons 22. A hollow cylinder 24 is installed in the middle of the upper end of the control box 15. A swing mechanism 28 is rotatably mounted on the upper end of the hollow cylinder 24. A guide pin block 25 is fixedly mounted in the middle of the swing mechanism 28. Limit pins 26 are hinged to both sides of the guide pin block 25, and the two limit pins 26 are rotatably connected to the piston rod 27 respectively. A hollow cylinder 24 is rotatably connected to the upper end of the swing mechanism 28. Hollow cylinder 29 is fixedly connected to emergency power supply body 1. A driven door 31 is movably provided on one side of each of the two pressure relief pipes 8. The driven door 31 abuts against the pressure relief piston 22. A rotating shaft 17 is inserted and rotatably installed in the middle of the control box 15. The rotating shaft 17 passes through hollow cylinder 24 and is fixedly connected to guide pin block 25. A main gear 30 is fixedly fitted at one end of the rotating shaft 17 that passes through the control box 15. A rotating shaft seat 32 is rotatably installed at the bottom of each of the two pressure relief cylinders 23. A fan blade 34 is fixedly fitted at the lower part of each of the two rotating shaft seats 32. A secondary gear 33 is fixedly fitted at the lower part of each of the two rotating shaft seats 32. Both secondary gears 33 mesh with the main gear 30.
[0030] The above technical solution involves: a micro dual-axis motor 16 driving the upper and lower rotating shafts 17 to rotate synchronously, causing the main gear 2 30 to rotate and the secondary gear 2 33 to follow suit. This, in turn, causes the two rotating shaft seats 32 to rotate, and the fan blades 34 to push the high-pressure gas into the active pressure relief assembly 554 through a preset channel, pushing the pressure relief piston 22 inside to move. The fan blades 34 rotate at high speed, accelerating the external circulation of gas inside the emergency power supply body 1. After passing through the exhaust fan 4 and the blower 6, the external heat dissipation of the shell is enhanced. The piston movement is converted into the rotational movement of the guide pin block 25 on the hollow cylinder 1 24 and the hollow cylinder 2 29 through the connecting rod mechanism such as the piston rod 27 and the limit pin 26. This rotation, in turn, drives the swing device 28 to rotate synchronously with the rotating shaft 17. When the pressure relief piston 22 moves back and forth upward in the pressure relief cylinder 23, it contacts the driven door 31, allowing the internal high-pressure gas to be transported into the pressure relief pipe 8 for orderly release, thus preventing the shell from exploding.
[0031] Specific usage of this invention: In a flame-retardant device for an automotive emergency power supply battery module based on thermally triggered expansion according to the present invention, when the battery block 13 begins to heat up abnormally due to a fault, the heat generated first acts on the low-melting-point alloy sheet 14 connecting the series circuit of the battery block. The alloy sheet melts rapidly when it reaches a specific temperature, physically severing the electrical connection between the battery blocks and preventing electrical energy from continuing to be input to the fault point, thus curbing the energy supply for thermal runaway from the source. At the same time, the heat is conducted to the adjacent expanding phase change flame-retardant bag 46. The phase change material inside the bag absorbs heat and melts, accompanied by volume expansion, forming a preliminary enclosure and heat insulation for the battery block, delaying heat diffusion. The thermal runaway reaction continues to generate a large amount of high-temperature and high-pressure gas, causing the internal pressure of the emergency power supply body 1 to rise sharply, automatically starting the micro dual-axis motor 16. The rotation drives the upper and lower rotating shafts 17 to rotate synchronously, causing the main gear 2 30 to rotate and the secondary gear 2 33 to follow suit. This, in turn, drives the two rotating shaft seats 32 to rotate, and the fan blades 34 then draw high-pressure gas into the active pressure relief assembly 554 through a preset channel. This pushes the pressure relief piston 22 inside the assembly to move. The fan blades 34 rotate at high speed, accelerating the external circulation of gas inside the emergency power supply body 1. After passing through the exhaust fan 4 and the blower 6, the gas is cooled from the outside of the housing. The piston movement is converted into the rotational movement of the guide pin block 25 on the hollow cylinder 1 24 and hollow cylinder 2 29 by the piston rod 27, limit pin 26, and other linkage mechanisms. This rotation, in turn, drives the oscillator 28 to rotate synchronously with the rotating shaft 17. When the pressure relief piston 22 moves back and forth upward in the pressure relief cylinder 23, it abuts against the driven door 31, causing the high-pressure gas inside to be released. Compressed gas is delivered to the pressure relief pipe 8 for orderly release, preventing the casing from exploding. The micro dual-axis motor 16 drives the main gear 18 to rotate. The main gear 18 drives the secondary gear 43 and the traction main shaft 42. The traction main shaft 42 drives the toothed groove 47, ultimately driving the conveyor belt 35 to rotate around the traction secondary shaft 57. The conveyor teeth 36 on the conveyor belt 35 violently agitate the coolant in the arc-shaped cooling well 20, disrupting the thermal boundary layer and achieving forced convection of the coolant. The coolant in the cooling mesh box 44 also flows fully, quickly carrying the heat accumulated at the bottom of the battery block to the heat sink 58 on the condenser 19 for dissipation. The continuous flow of coolant driven by the conveyor teeth 36 further enhances the active and efficient cooling of the battery block from the inside. After the automatic start-up drive shaft 41 rotates, the worm gear 50 follows, which in turn drives the turbine 49 to rotate. The reciprocating screw 48 also rotates. Guided by the guide displacement component 553, the threaded block 11 moves on the reciprocating screw 48 until it reaches the heat source. The slider 10 slides along the open beam 9, moving the shape memory metal box 39 on it to above the heat source battery block. While the pressure drives the mechanical system, high temperature also acts on the shape memory metal box 39. When the temperature exceeds its deformation threshold, the shape memory metal box 39 recovers its shape. The dry powder or vaporized liquid extinguishing agent inside the box is precisely released to the ignition point through the discharge port 12, achieving rapid chemical suppression. At the same time, the flame-retardant cover 37 and the buckle plate 21 around the battery block are further tightened under thermal or linkage action.Together with the expansion phase change flame retardant bag 46, they form a multi-layered physical barrier to prevent the spread of flames; An emergency jump-start socket 5 is provided on one side of the emergency power supply body 1, which can be used with... Figure 9 The emergency jump starter 51 is used in the vehicle. One end of the emergency jump starter 51 is equipped with an emergency jump starter socket 5, which has a foolproof female connector. After the female connector is connected to the male connector at one end of the emergency jump starter 51, it can be clamped to the positive and negative terminals of the car battery through the positive and negative terminals of the other end of the emergency jump starter 51 to perform emergency power jump start operation on the car.
[0032] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.
Claims
1. A flame-retardant device for automotive emergency power battery modules based on thermally triggered expansion, characterized in that: The system includes an emergency power supply body (1), inside which a battery block module assembly (551) is installed. The battery block module assembly (551) includes an arc-shaped cooling well (20) fixedly installed at the bottom of the emergency power supply body (1). Multiple battery blocks (13) are horizontally distributed on the inner side of the arc-shaped cooling well (20). Two conductive heads (38) are installed at the top of each of the multiple battery blocks (13). A low-melting-point alloy sheet (14) is commonly fitted in the middle of the multiple conductive heads (38) on each side. A fire extinguishing and heat insulation assembly (552) is movably installed inside the emergency power supply body (1). 52) Includes a memory metal box (39) that is movably installed inside the emergency power supply body (1). The upper end of the memory metal box (39) is provided with a discharge port (12). The emergency power supply body (1) is fixedly installed with a guide displacement component (553). The emergency power supply body (1) is fixedly connected with an active pressure relief component (554). The active pressure relief component (554) includes an operation box (15) fixedly connected to the inner wall of the emergency power supply body (1). The inner side of the arc surface cooling well (20) is rotatably installed with a cooling protection component (555). The upper end of the arc surface cooling well (20) is rotatably installed with a linkage acceleration component (556).
2. The flame-retardant device for automotive emergency power battery modules based on thermally triggered expansion according to claim 1, characterized in that: An expansion phase change flame retardant bag (46) is provided between each of the multiple battery blocks (13). An installation rod (45) is fixedly connected to both ends of each of the multiple expansion phase change flame retardant bags (46). Each of the multiple installation rods (45) is fixedly connected to the inner wall of the emergency power supply body (1). A cooling mesh box (44) is provided between each of the multiple battery blocks (13).
3. The flame-retardant device for automotive emergency power battery modules based on thermally triggered expansion according to claim 1, characterized in that: Multiple heat sinks (58) are interspersed on one side of the arc-shaped cooling well (20), and a condenser (19) is installed inside the emergency power supply body (1). The condenser (19) is used in conjunction with the heat sinks (58).
4. The flame-retardant device for automotive emergency power battery modules based on thermally triggered expansion according to claim 1, characterized in that: The guide displacement assembly (553) includes two open beams (9) fixedly connected to the inner wall of the emergency power supply body (1). A slider (10) is slidably installed in the middle of each of the two open beams (9). Both sliders (10) are fixedly connected to the memory metal box (39). A threaded block (11) is fixedly connected to the bottom of each slider (10).
5. A flame-retardant device for automotive emergency power battery modules based on thermally triggered expansion according to claim 4, characterized in that: Both of the two open beams (9) are rotatably mounted with reciprocating screws (48). Both of the two reciprocating screws (48) are fixedly fitted with turbines (49) at one end of each open beam (9). A miniature dual-axis motor (40) is fixedly mounted on one side of the control box (15). Both ends of the miniature dual-axis motor (40) are rotatably mounted with shafts (41). Both shafts (41) are fixedly connected with worm gears (50) on opposite sides. The turbine (49) meshes with the worm gears (50). Both worm gears (50) are rotatably connected to the inner wall of the emergency power supply body (1). The two threaded blocks (11) are respectively fitted with the reciprocating screws (48).
6. The flame-retardant device for automotive emergency power battery modules based on thermally triggered expansion according to claim 1, characterized in that: The cooling protection assembly (555) includes multiple traction shafts (57) rotatably installed inside the arc-shaped cooling well (20). A conveyor belt (35) is installed on the outer surface of the multiple traction shafts (57). Multiple conveyor teeth (36) are fixedly connected to both sides of the conveyor belt (35). The inner conveyor teeth (36) are slidably disposed with the inner wall of the arc-shaped cooling well (20).
7. A flame-retardant device for automotive emergency power battery modules based on thermally triggered expansion according to claim 6, characterized in that: The linkage acceleration component (556) includes a traction main shaft (42) rotatably mounted on one side of the arc-shaped cooling well (20). A secondary gear (43) is fixedly mounted on the upper end of the traction main shaft (42). The inner wall of the conveyor belt (35) is provided with multiple tooth grooves (47) that mesh with the traction main shaft (42).
8. A flame-retardant device for automotive emergency power battery modules based on thermally triggered expansion according to claim 7, characterized in that: A flame-retardant cover (37) is fitted on the outside of multiple battery blocks (13). A buckle plate (21) is fitted on the outer surface of the flame-retardant cover (37). A micro dual-axis motor (16) is vertically fixed on one side of the buckle plate (21). A rotating shaft (17) is installed at both ends of the micro dual-axis motor (16). A main gear (18) that meshes with the secondary gear (43) is fitted on the outer surface of the lower rotating shaft (17).
9. A flame-retardant device for automotive emergency power battery modules based on thermally triggered expansion according to claim 1, characterized in that: Two pressure relief pipes (8) are fixedly connected to the upper end of the control box (15). Both pressure relief pipes (8) are inserted into the emergency power supply body (1). Pressure relief cylinders (23) are inserted into both sides of the control box (15). Pressure relief pistons (22) are slidably installed on the inner side of both pressure relief cylinders (23). Piston rods (27) are rotatably connected to the upper ends of both pressure relief pistons (22). A hollow cylinder (24) is installed in the middle of the upper end of the control box (15). A swing device is rotatably mounted on the upper end of the hollow cylinder (24). (28) A guide pin block (25) is fixedly fitted in the middle of the swing device (28). Limit pins (26) are hinged on both sides of the guide pin block (25). The two limit pins (26) are rotatably connected to the piston rod (27). A hollow cylinder (29) is rotatably connected to the upper end of the swing device (28). The hollow cylinder (29) is fixedly connected to the emergency power supply body (1). A driven door (31) is movably provided on one side of each of the two pressure relief pipes (8). The driven door (31) is in contact with the pressure relief piston (22).
10. A flame-retardant device for an automotive emergency power battery module based on thermally triggered expansion according to claim 9, characterized in that: A rotating shaft (17) is rotatably installed in the middle of the control box (15). The rotating shaft (17) passes through the hollow cylinder (24) and is fixedly connected to the guide pin block (25). A main gear (30) is fixedly fitted at one end of the rotating shaft (17) that passes through the control box (15). A rotating shaft seat (32) is rotatably installed at the bottom of each of the two pressure relief cylinders (23). A fan blade (34) is fixedly fitted at the lower part of each of the two rotating shaft seats (32). A secondary gear (33) is fixedly fitted at the lower part of each of the two rotating shaft seats (32). Both secondary gears (33) mesh with the main gear (30).