Vehicle chassis fireproof plate device and control method thereof
By designing a fire baffle device on the chassis of a new energy vehicle, using cameras and sensors to monitor flames and smoke, and the controller unlocking the fire baffle to unfold and form a fire containment barrier, the problem of new energy vehicles being unable to automatically form escape and rescue channels in the early stages of a fire is solved, enabling safe escape and efficient rescue.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-03-03
- Publication Date
- 2026-03-31
AI Technical Summary
Existing technologies cannot automatically create safe escape and rescue channels in the early stages of a fire in a new energy vehicle. Traditional fire prevention measures are inefficient and cannot prevent flames from shooting outward, affecting the progress of passenger escape and rescue.
Design a fireproof plate device for vehicle chassis, including a baffle assembly and a locking mechanism. The device monitors flames and smoke through cameras and sensors. The controller unlocks the fire baffle to unfold and form a fire barrier, providing an escape route and a fire safety area.
In the early stages of a fire, it automatically forms a fire-blocking dike, reducing the danger of flames to passengers, providing safe escape routes and fire-safe areas, improving rescue efficiency, and reducing the harm of fire to drivers and passengers.
Smart Images
Figure CN121754839A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of new energy vehicle safety technology, and in particular to a vehicle chassis fireproof plate device and its control method. Background Technology
[0002] With the widespread adoption of new energy vehicles, the number of vehicle undercarriage fires caused by thermal runaway of power batteries is gradually increasing. These fires are characterized by their sudden onset, high flame temperature, and tendency to spread laterally, seriously threatening the lives of passengers inside the vehicle. When a fire occurs, traditional vehicle structures cannot provide safe escape routes for passengers; flames directly threaten the door areas, preventing passengers from evacuating safely. Simultaneously, rescue personnel arriving at the scene face difficulties accessing the vehicle to conduct rescue operations due to the flames.
[0003] Existing technical solutions mainly focus on internal battery pack protection, vehicle-wide fire blankets, or external water spray cooling. However, these solutions all have significant shortcomings: internal battery pack protection cannot prevent flames from shooting outward; fire blankets require manual application and cannot automatically take effect in the early stages of a fire; external water spray cooling is inefficient and cannot solve the problem of passenger escape routes being blocked by flames. It also prevents firefighters from approaching the area during a fire, severely impacting the rescue progress. Therefore, there is an urgent need for a device that can automatically create safe escape and rescue routes. Summary of the Invention
[0004] The present invention provides a vehicle chassis fireproof plate device to solve the problems mentioned in the background art.
[0005] In order to achieve the above-mentioned objectives, the present invention provides the following technical solution: a vehicle chassis fireproof plate device, including a baffle assembly, wherein the baffle assembly consists of two or three fireproof plates disposed under the chassis; When the baffle assembly includes two fire baffles, the two fire baffles are arranged in parallel on both sides of the chassis. When the baffle assembly includes three fire baffles, two fire baffles are arranged in parallel on both sides of the chassis, and the third fire baffle is arranged perpendicular to the two parallel fire baffles. The end of the fire baffle is connected to the bottom of the chassis via an elastic connector, and the other ends of the two parallel fire baffles are arranged opposite to each other. A locking mechanism is connected to the chassis to ensure that the other end of the fire baffle does not contact the ground when the vehicle is moving; A camera is connected outside the driver's compartment on the chassis to monitor the smoke and flames generated when the power battery connected to the chassis is burning. Storage battery; The chassis is equipped with sensors for monitoring the smoke and flames generated when the power battery is burning. The sensors, camera, locking mechanism and battery are all electrically connected to the controller, which is installed in the driver's cab.
[0006] Preferably, the elastic connector includes: a mounting plate connected to the chassis, a mounting plate connected to a fixed shaft, a sleeve rotatably connected to the fixed shaft, an elastic element connected between the mounting plate and the fire baffle, and the sleeve connected to the end of the fire baffle.
[0007] Preferably, the elastic element includes a torsion spring sleeved on a fixed shaft, with both ends of the torsion spring connected to a mounting plate and a fire baffle plate, respectively.
[0008] Preferably, the elastic element includes a compression spring, the fire baffle is connected to the bottom end of the compression spring, and the top end of the compression spring is in contact with the chassis.
[0009] Preferably, the locking mechanism includes a manual unlocking component; the manual unlocking component includes a push rod slidably connected to the cab, a mounting ring on the push rod being connected to the end of a limiting spring, the other end of the limiting spring being connected to the cab, the push rod being connected to a plug rod, and the plug rod located below the chassis engaging with a lock hole on the fire baffle.
[0010] Preferably, the locking mechanism includes a drive unlocking component, which is connected to the chassis, and the other end of the drive unlocking component is locked to the fire baffle.
[0011] Preferably, the other end of the fire baffle is slidably connected to the opening of the fire baffle extension plate, the inner wall of the opening end of the fire baffle extension plate is connected to the end of the compression spring, and the other end face of the fire baffle is connected to the other end of the compression spring.
[0012] Preferably, the other end sidewall of the fire baffle is slidably connected to a slide rail on the inner wall of the opening of the fire baffle extension plate, wherein the slide rail is a roller linear slide rail sealed by a metal scraper or a fully sealed ball slide rail.
[0013] Preferably, the inner wall of the open end of the fire-blocking extension plate cooperates with the other end face of the fire-blocking plate to compress the compression spring one. A limit block is connected to the fire-blocking plate. The limit block is placed at the end of the slide groove away from the fire-blocking plate. The slide groove is opened on the fire-blocking extension plate. The second lock hole on the fire-blocking extension plate is inserted into the output shaft of the drive unlocking component.
[0014] Preferably, a control method for a vehicle chassis fire baffle device, applicable to any of the above-described vehicle chassis fire baffle devices, includes the following steps: It acquires and sends smoke image data collected by the camera, as well as smoke concentration data and flame spectrum data collected by the sensor, to the controller in real time; When at least one of the smoke image data, smoke concentration data, and flame spectrum data exceeds its corresponding preset threshold, a power battery fire is determined to have occurred. A fire baffle trigger command is generated and sent to the locking mechanism to unlock the fire baffle and drive it to unfold, forming a fire-resistant embankment located below the chassis.
[0015] The beneficial effects of this invention are as follows: In the solution of this invention: When a fire occurs in the power battery, the locking mechanism unlocks, the fire baffle opens, and its other end contacts the ground. Two or three fire baffles form a fire-blocking dike to guide the direction of the burning flames of the battery and form an escape route on both sides of the vehicle, providing a safe area for rescuers and firefighters, reducing the danger of the flames to the driver and passengers after the fire occurs and preventing injury. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram showing the connection relationship between the push rod and the limiting spring of the present invention; Figure 3 This is a schematic diagram of the lock hole and lock hole insertion relationship of the present invention; Figure 4 This is a schematic diagram of the installation position of the torsion spring of the present invention; Figure 5 This is a schematic diagram showing the location of the three keyholes in this invention; Figure 6 This is a schematic diagram showing the connection between the lock hole three and the insertion rod of the present invention; Figure 7 This is a schematic diagram showing the location of the keyhole in this invention; Figure 8 This is a schematic diagram of the sliding relationship between the limiting block and the sliding groove of the present invention; Figure 9 This is a schematic diagram of the installation position of the compression spring of the present invention; Figure 10 This is a schematic diagram showing the location of the two-opening lock hole of the present invention; Figure 11 This is a flowchart illustrating the opening process of the fire baffle of the present invention.
[0017] The components include: chassis 1, fire baffle 2, elastic connector 3, mounting plate 5, fixed shaft 6, sleeve 7, torsion spring 8, lock hole 10, fire baffle extension plate 11, slide rail 112, compression spring one 12, compression spring 13, limit block 14, slide groove 15, lock hole two 16, insertion rod 17, push rod 18, through hole 1801, sealing strip 1802, limit spring 19, lock post 20, and lock hole three 21. Detailed Implementation
[0018] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0019] Example 1: Reference Figures 1-11 A vehicle chassis fireproof plate device includes: a fire baffle assembly, wherein the fire baffle assembly consists of two or three fire baffles 2 disposed below the chassis 1; When the baffle assembly includes two fire baffles 2, the two fire baffles 2 are arranged in parallel on both sides of the chassis 1. When the baffle assembly includes three fire baffles 2, two fire baffles 2 are arranged in parallel on both sides of the chassis 1, and the third fire baffle 2 is arranged perpendicular to the two parallel fire baffles 2. The end of the fire baffle 2 is connected to the bottom of the chassis 1 via an elastic connector 3, and the other ends of the two parallel fire baffles 2 are arranged opposite to each other. A locking mechanism is connected to the chassis 1 to ensure that the other end of the fire baffle 2 does not contact the ground when the vehicle is moving; A camera is connected outside the driver's compartment on the chassis 1 to monitor the smoke and flames generated when the power battery connected to the chassis 1 is burning. Storage battery; The chassis 1 is equipped with a sensor for monitoring the smoke and flames generated when the power battery is burning. The sensor, camera, locking mechanism and battery are all electrically connected to the controller, which is installed in the driver's cab.
[0020] The principle behind the above scheme is as follows: A camera located outside the driver's compartment is used to monitor the flames generated when the power battery is burning. The camera is preferably connected to the rearview mirror outside the driver's compartment. The sensor is preferably a dual-spectrum flame detector or a composite fire detector to accurately monitor the flames and smoke generated when the power battery is burning. After the monitoring signals from the camera and sensor are transmitted to the controller, the controller controls the locking mechanism to unlock the fire baffle 2. When two fire baffles 2 are set parallel to each other under the chassis 1, as the locking mechanism is opened, the fire baffles 2 rotate around the elastic connector 3 under the action of the elastic force of the elastic connector 3. Then, the other end of the fire baffle 2 contacts the ground. At this time, the fire baffles 2 set on both sides of the chassis 1 form a fire barrier to prevent the flames from burning towards the door, so as to form a safe escape passage on both sides of the door. When three fire baffles 2 are set in the baffle group, one fire baffle 2 is perpendicular to the two parallel fire baffles 2. Therefore, when the three fire baffles 2 are opened, a fire barrier with an opening is formed, which further restricts the burning direction of the flames to the front or rear of the vehicle.
[0021] The beneficial effects of the above scheme are as follows: When the power battery catches fire, the locking mechanism unlocks, the fire baffle 2 opens, and its other end contacts the ground. Two or three fire baffles 2 form a fire-blocking dam to guide the burning direction of the battery flames and form an escape route on both sides of the vehicle, providing a safe area for rescuers and a fire safety area for firefighters, reducing the danger of the flames to the driver and passengers after the fire and avoiding injury. The formation of the fire-resistant dike can provide a protective space for firefighters during firefighting operations, creating a space below the chassis 1 that allows fire-fighting water or extinguishing liquid to remain, further increasing the fire-fighting effect.
[0022] Example 2: Reference Figures 1-11 The elastic connector 3 includes: a mounting plate 5, which is connected to the chassis 1 and a fixed shaft 6. A sleeve 7 is rotatably connected to the fixed shaft 6. An elastic element is connected between the mounting plate 5 and the fire baffle 2. The sleeve 7 is connected to the end of the fire baffle 2.
[0023] The principles and beneficial effects of the above scheme are as follows: Mounting plate 5 is connected to chassis 1. The fixed axis 6 of mounting plate 5 is rotatably connected to the sleeve 7 at the end of fire baffle 2. The elastic element ensures that after the locking mechanism unlocks the fire baffle 2 in the event of a fire, the fire baffle 2 can be opened smoothly.
[0024] Example 3: Reference Figures 1-11 The elastic component includes a torsion spring 8 sleeved on a fixed shaft 6, with both ends of the torsion spring 8 connected to the mounting plate 5 and the fire baffle plate 2, respectively.
[0025] The elastic component includes a compression spring 13, the fire baffle 2 is connected to the bottom end of the compression spring 13, and the top end of the compression spring 13 is in contact with the chassis 1.
[0026] The principles and beneficial effects of the above scheme are as follows: The spring component comes in various forms, including torsion springs (8) and compression springs (13). Manufacturers can select any spring component based on manufacturing conditions and vehicle parameters, or use two types of spring components simultaneously.
[0027] Example 4: Reference Figures 1-11 The locking mechanism includes a manual unlocking component; the manual unlocking component includes a push rod 18 slidably connected to the cab, a mounting ring on the push rod 18 being connected to the end of a limiting spring 19, the other end of the limiting spring 19 being connected to the cab, the push rod 18 being connected to a plug rod 17, and the plug rod 17 located below the chassis 1 being locked in place with a locking hole 10 on the fire baffle 2.
[0028] A locking pin 20 is connected to the fire baffle 2, and a locking hole 3 21 is opened through the locking pin 20 to lock and engage with the insertion rod 17.
[0029] The principles and beneficial effects of the above scheme are as follows: A push rod 18 can also be installed in the cab to manually unlock the fire baffle 2. When the push rod 18 is pushed, the limit spring 19 is compressed, and the insert rod 17 disengages from the lock hole 10, contacting the lock between the two. Under the action of the elastic element, the fire baffle 2 opens. Alternatively, a locking pin 20 can be connected to the fire baffle 2. This is suitable when the distance between the fire baffle 2 and the chassis 1 is large. The lock of the fire baffle 2 can be released by contacting the locking engagement between the insert rod 17 and the lock hole 21. A through hole 1801 is opened through the chassis 1. Each of the two inner walls of the through hole 1801 is connected to the end of a sealing strip 1802. The other end of the sealing strip 1802 is slidably sealed to the extension rod connected to the bottom of the push rod 18. The end of the extension rod located below the chassis 1 is connected to the insert rod 17. While releasing the lock between the insert rod 17 and the lock hole 10, the interior of the cab can be sealed by the sealing strip 1802.
[0030] Example 5: Reference Figures 1-11 The locking mechanism includes a drive unlocking component, which is connected to the chassis 1, and the other end of the drive unlocking component is locked to the fire baffle 2.
[0031] The principles and beneficial effects of the above scheme are as follows: The locking mechanism can also be a drive unlocking component connected to the chassis 1. The drive unlocking component is preferably an electric push rod, a hydraulic rod, an unlocking motor, a telescopic motor, a starting expansion actuator, or an electric tailgate lock. The output shafts of the electric push rod, hydraulic rod, and telescopic motor can all lock into the lock hole 10 on the fire baffle 2. The output ends of the unlocking motor and the electric tailgate lock can lock the fire baffle 2 respectively. The specific drive unlocking component used can be selected based on the actual production capacity of the manufacturer and the parameters of the vehicle. Furthermore, based on Embodiment 4, the output end of the drive unlocking component can also be connected to the end of the plug 17.
[0032] Example 6: Reference Figures 1-11 The other end of the fire baffle 2 is slidably connected to the opening of the fire baffle extension plate 11. The inner wall of the opening end of the fire baffle extension plate 11 is connected to the end of the compression spring 12, and the other end face of the fire baffle 2 is connected to the other end of the compression spring 12.
[0033] The principles and beneficial effects of the above scheme are as follows: When the distance between the vehicle chassis 1 and the ground is large, the other end of the fire baffle 2 can be slidably engaged with the inside of the opening of the fire baffle extension plate 11, further compressing the spring 12, which can be compressed by the fire baffle extension plate 11, thereby improving the stability of the fire baffle extension plate 11 when it contacts the ground.
[0034] Example 7: Reference Figures 1-11 The other side wall of the fire baffle 2 is slidably connected to the slide rail 112 on the inner wall of the opening of the fire baffle extension plate 11. The slide rail 112 is a roller linear slide rail sealed by a metal scraper or a fully sealed ball slide rail.
[0035] The principles and beneficial effects of the above scheme are as follows: In addition to the sliding fit method in Embodiment 6, a slide rail 112 can also be installed on the fire baffle extension plate 11. The slide rail 112 slides with the fire baffle plate 2, which can further improve the sliding efficiency between the other side wall of the fire baffle plate 2 and the fire baffle extension plate 11, and prevent the fire baffle extension plate 11 from failing to slide with the fire baffle plate 2.
[0036] Example 8: Reference Figures 1-11 The inner wall of the opening end of the fire baffle extension plate 11 cooperates with the other end face of the fire baffle plate 2 to compress the compression spring 12. A limit block 14 is connected on the fire baffle plate 2. The limit block 14 is placed at the end of the slide groove 15 away from the fire baffle plate 2. The slide groove 15 is opened on the fire baffle extension plate 11. The second lock hole 16 on the fire baffle extension plate 11 is inserted and cooperated with the output shaft of the drive unlocking component.
[0037] The principles and beneficial effects of the above scheme are as follows: When the spring force of the compression spring 12 is too large, in order to prevent the fire-blocking extension plate 11 from separating from the fire-blocking plate 2, a sliding groove 15 can be opened on the fire-blocking extension plate 11. The sliding groove 15 slides and engages with the limiting block 14 of the fire-blocking plate 2 to limit the fire-blocking extension plate 11. At this time, the output end of the drive unlocking component engages with the locking hole 16 on the fire-blocking extension plate 11 to limit the fire-blocking extension plate 11 and the fire-blocking plate 2.
[0038] Example 9: Reference Figures 1-11 A control method for a vehicle chassis fire damper device, applicable to any of the above-mentioned vehicle chassis fire damper devices, includes the following steps: It acquires and sends smoke image data collected by the camera, as well as smoke concentration data and flame spectrum data collected by the sensor, to the controller in real time; When at least one of the smoke image data, smoke concentration data, and flame spectrum data exceeds its corresponding preset threshold, a power battery fire is determined to have occurred. A trigger command for the fire baffle 2 is generated and sent to the locking mechanism to release the lock on the fire baffle 2 and drive the fire baffle 2 to unfold, forming a fire-resistant dam located below the chassis 1.
[0039] The principles and beneficial effects of the above scheme are as follows: The controller in the system synchronously collects and preprocesses multi-source data from cameras or smoke and flame sensors. It judges the fire situation by using preset thresholds and fusion judgment logic, including the highest priority trigger of flame signals, the joint trigger of smoke and visual signals, and the redundancy confirmation mechanism of single signals. Once the fire is confirmed, the controller immediately sends a command to the locking mechanism to drive the fire baffle 2 to quickly unfold, thereby forming a fire-blocking dike under the chassis 1. This achieves closed-loop active protection from perception, decision-making to execution, and improves the safety of rescue and escape.
[0040] It achieves rapid response in milliseconds to seconds, accurate judgment, and multi-source fusion to reduce false alarms and missed alarms, enabling it to automatically establish isolation in the early stages of a fire, significantly improving the overall vehicle safety protection level and occupant escape opportunities.
[0041] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.
Claims
1. A vehicle chassis fireproof plate device, characterized in that, Includes a fire baffle assembly, which consists of two or three fire baffles (2) disposed below the chassis (1); When the baffle assembly includes two fire baffles (2), the two fire baffles (2) are arranged in parallel on both sides of the chassis (1); When the baffle assembly includes three fire baffles (2), two fire baffles (2) are arranged in parallel on both sides of the chassis (1), and the third fire baffle (2) is arranged perpendicular to the two parallel fire baffles (2); The end of the fire baffle (2) is connected to the bottom of the chassis (1) through an elastic connector (3), and the other ends of the two parallel fire baffles (2) are arranged opposite each other; A locking mechanism is connected to the chassis (1) to ensure that the other end of the fire baffle (2) will not contact the ground when the vehicle is moving; A camera is connected outside the driver's compartment on the chassis (1) to monitor the smoke and flames generated when the power battery connected to the chassis (1) is burning. Storage battery; The chassis (1) is equipped with a sensor for monitoring the smoke and flames generated when the power battery is burning. The sensor, camera, locking mechanism and battery are all electrically connected to the controller, which is installed in the cab.
2. The vehicle chassis fireproof plate device according to claim 1, characterized in that, The elastic connector (3) includes: a mounting plate (5), which is connected to the chassis (1), the mounting plate (5) is connected to the fixed shaft (6), a sleeve (7) is rotatably connected to the fixed shaft (6), an elastic element is connected between the mounting plate (5) and the fire baffle (2), and the sleeve (7) is connected to the end of the fire baffle (2).
3. A vehicle chassis fireproof plate device according to claim 2, characterized in that, The elastic component includes a torsion spring (8) sleeved on a fixed shaft (6), with both ends of the torsion spring (8) connected to the mounting plate (5) and the fire baffle plate (2) respectively.
4. A vehicle chassis fireproof plate device according to claim 2, characterized in that, The elastic component includes a compression spring (13), the fire baffle (2) is connected to the bottom end of the compression spring (13), and the top end of the compression spring (13) is in contact with the chassis (1).
5. A vehicle chassis fireproof plate device according to claim 1, characterized in that, The locking mechanism includes a manual unlocking component; the manual unlocking component includes a push rod (18) slidably connected to the cab, the mounting ring on the push rod (18) being connected to the end of the limiting spring (19), the other end of the limiting spring (19) being connected to the cab, the push rod (18) being connected to the insert rod (17), and the insert rod (17) located below the chassis (1) being locked in place with the lock hole (10) on the fire baffle (2).
6. A vehicle chassis fireproof plate device according to claim 1, characterized in that, The locking mechanism includes a drive unlocking component, which is connected to the chassis (1), and the other end of the drive unlocking component is locked to the fire baffle (2).
7. A vehicle chassis fireproof plate device according to claim 1, characterized in that, The other end of the fire baffle (2) is slidably connected to the opening of the fire baffle extension plate (11). The inner wall of the opening end of the fire baffle extension plate (11) is connected to the end of the compression spring (12), and the other end face of the fire baffle (2) is connected to the other end of the compression spring (12).
8. A vehicle chassis fireproof plate device according to claim 7, characterized in that, The other side wall of the fire baffle (2) is slidably connected to the slide rail (112) on the inner wall of the opening of the fire baffle extension plate (11). The slide rail (112) is a roller linear slide rail sealed by a metal scraper or a fully sealed ball slide rail.
9. A vehicle chassis fireproof plate device according to claim 8, characterized in that, The inner wall of the opening end of the fire baffle extension plate (11) cooperates with the other end face of the fire baffle plate (2) to compress the compression spring (12). A limit block (14) is connected on the fire baffle plate (2). The limit block (14) is placed at the end of the slide groove (15) away from the fire baffle plate (2). The slide groove (15) is opened on the fire baffle extension plate (11). The second lock hole (16) on the fire baffle extension plate (11) is inserted into the output shaft of the drive unlocking component.
10. A control method for a vehicle chassis fire baffle device, applicable to the vehicle chassis fire baffle device according to any one of claims 1-9, characterized in that, Includes the following steps: It acquires and sends smoke image data collected by the camera, as well as smoke concentration data and flame spectrum data collected by the sensor, to the controller in real time; When at least one of the smoke image data, smoke concentration data, and flame spectrum data exceeds its corresponding preset threshold, a power battery fire is determined to have occurred. A fire baffle (2) trigger command is generated and sent to the locking mechanism to release the fire baffle (2) and drive the fire baffle (2) to unfold, forming a fire-resistant dam located below the chassis (1).