Electric vehicle battery mounting system with fire control and fire fighting structure

Abstract

The invention discloses an electric vehicle battery installation system with a fire control and fire fighting structure. The electric vehicle battery installation system comprises a battery box, a fire extinguishing assembly and a driving assembly. The battery box is provided with a sealing top cover, a fireproof bottom plate and a heat conducting plate, and pressure relief holes are formed in the periphery of the battery box; the fire extinguishing assembly is arranged around the battery box and comprises a rolling box, a retractable fire extinguishing blanket and a traction strip, and the traction strip is linked with a rotating disc structure in the driving assembly and can control the fire extinguishing blanket to unfold to cover a pressure relief hole area; the fire blanket adopts a multi-layer composite structure, is provided with a refractory layer, a counterweight layer and a substrate layer, and has the functions of flame retardance, heat insulation and fitting shielding. The system monitors fire behavior in real time through smog and an infrared sensor, a fire control system controls a motor to drive a rotating disc to release a fire blanket, automatic thermal shrinkage triggering of a traction strip at high temperature is also supported, and fire behavior emergency control is achieved; the electric vehicle battery system has the advantages of quick response, compact structure, double triggering and accurate fire control, and the fire safety capability of the electric vehicle battery system is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to an electric vehicle battery installation system with a fire control and fire protection structure. Background Art

[0002] With the rapid development of the new energy vehicle industry, electric vehicles have become an essential part of transportation. The power batteries in electric vehicles, as their core energy system, offer advantages such as high energy density and high power output, but they also carry a significant risk of thermal runaway. Under the influence of factors such as overcharging, short circuits, structural damage, and external impact, battery cells or modules may experience thermal runaway, further triggering high-temperature combustion, gas explosions, and even vehicle fires, posing a serious threat to personal and property safety.

[0003] In the existing technology, some electric vehicle manufacturers adopt the following types of fire prevention solutions: high-strength shell structure: the metal shell is used to enhance the protection capability, but it only has a physical isolation function and cannot cope with high-temperature diffusion and open flame leakage; passive pressure relief valve design: a pressure relief hole is set in the battery box to release gas, but the flame can easily be ejected through the pressure relief hole, and there is a hidden danger of "flame tongue" leakage; fire extinguishing methods such as spraying and dry powder: most of them are external fire response, which is difficult to achieve integrated deployment on the vehicle, with delayed response and low fire extinguishing efficiency; temperature control management system: such as liquid cooling or air cooling system, although it can control the battery temperature, it cannot form effective flame retardant protection in the event of sudden thermal runaway.

[0004] In addition, certain forms of battery fire protection structures also exist in existing literature and patents, such as the provision of flame-retardant cushions and expanding materials, but they often lack systematic linkage designs. For example, linkage mechanisms such as sensor integration and automatic response to fire extinguishing actions are relatively lacking, and most structures cannot take into account both real-time responsiveness and redundant safety, making it difficult to function stably in complex fire conditions or power outages.

[0005] Therefore, there is an urgent need for an electric vehicle battery installation system with intelligent perception, automatic response, redundant control, and multi-layer fire extinguishing functions, which can quickly deal with dangerous situations as soon as a fire occurs through structural self-deployment, fire control and shielding, thermal insulation and flame retardancy, etc., and fundamentally improve the fire safety capabilities of electric vehicles under extreme working conditions. Summary of the Invention

[0006] The present invention aims to solve one of the technical problems existing in the prior art or related technologies.

[0007] To this end, the technical solution adopted by the present invention is: an electric vehicle battery installation system with a fire control and fire protection structure, comprising: a battery box, a fire extinguishing assembly and a drive assembly, wherein the upper and lower surfaces of the battery box are respectively provided with a sealed top cover and a fireproof bottom plate, a heat conducting plate is embedded in the inner side of the sealed top cover, and the drive assembly is fixed to the bottom surface of the fireproof bottom plate; The fire extinguishing components are arranged in a plurality and are distributed one by one on the periphery of the battery box. The fire extinguishing components include a reel box, a fire blanket and a traction bar. The fire blanket is reeled and arranged inside the reel box, and one end of the traction bar is fixedly connected to the bottom end of the fire blanket. The other end of the traction bar is provided with a sliding pin block slidably mounted on the bottom surface of the fireproof bottom plate. The driving assembly includes a transmission box, a motor, and a first turntable and a second turntable rotatably mounted on the inner side of the transmission box. One side of the first turntable and the second turntable is provided with synchronous teeth that mesh with each other for transmission. The surfaces of the first turntable and the second turntable are both provided with side guide grooves and transverse guide grooves. The sliding pin block is slidably sleeved on the inner side of the side guide grooves and the transverse guide grooves, and the output end of the motor meshes with the synchronous teeth on the surface of the first turntable for transmission.

[0008] In a preferred example, the present invention can be further configured as follows: a circulating cooling lumen is provided on the inner side of the heat conducting plate, and the end of the heat conducting plate is connected to an electric vehicle battery liquid cooling circulation system for reducing the operating temperature of the battery.

[0009] In a preferred embodiment, the present invention can be further configured as follows: the battery box, the sealed top cover and the fireproof bottom plate are combined to form a sealed box structure, the sealed top cover and the fireproof bottom plate are uniformly high-temperature resistant sealing plate structures, and a plurality of pressure relief holes are opened on the periphery of the battery box for relieving pressure inside the battery box; Specifically, the upper and lower surfaces of the battery box are sealed by a sealing top cover and a fireproof bottom plate, and the pressure relief protection inside the battery is further provided through the pressure relief holes on the outer periphery of the battery box. When the fire blanket is lowered, the pressure relief hole ports are covered with the fire blanket to prevent flame explosion.

[0010] In a preferred embodiment of the present invention, the traction strip may be further configured as follows: the traction strip is a flexible heat-shrinkable strip structure, which can shrink and deform under high temperature to pull the fire blanket downward; Specifically, the fire blanket can be pulled and lowered under the active control of the drive component. In an unexpected state such as when the drive component is without power, the fire blanket can be lowered through the active thermal shrinkage of the fire blanket, providing redundant protection.

[0011] In a preferred embodiment, the present invention can be further configured as follows: a plurality of hanging ears are fixedly mounted on the outer periphery of the fireproof bottom plate and located on the outer periphery of the battery box for positioning and mounting the battery box; guide rods are fixedly mounted on the four feet of the surface of the battery box; a slide bar is provided at the bottom end of the fire blanket, and both ends of the slide bar are slidably sleeved on the inner side of the guide rod; Specifically, when the fire blanket is lowered, it is guided by the guide rods for sliding.

[0012] In a preferred embodiment, the present invention can be further configured as follows: the input end of the motor is electrically connected to a fire control system, and the input end of the fire control system is electrically connected to a sensor group located inside the battery box, and the sensor group includes a smoke sensor and an infrared temperature sensor, which are used to immediately control the operation of the motor in a fire situation, and the input end of the fire control system is electrically connected to a backup power supply; Specifically, in the event of a fire, smoke sensors and infrared temperature sensors are used for rapid detection, and the fire control system commands the motor to drive the fire blanket downward.

[0013] In a preferred example, the present invention can be further configured as follows: a linear slide groove is provided on the bottom surface of the fireproof bottom plate for guiding the sliding of the traction bar; the side guide grooves and transverse guide grooves on the surfaces of the first turntable and the second turntable are both arc-shaped; and the two ends of the side guide grooves and transverse guide grooves are at different distances from the center of the first turntable and the second turntable.

[0014] In a preferred embodiment of the present invention, the fire blanket may be further configured as follows: the fire blanket comprises a multi-layer composite structure, comprising: The fire-resistant layer is located on the outer surface of the fire blanket and is used to provide flame retardancy and heat insulation under the action of high-temperature flames, preventing high temperatures from being directly transferred to the surface of the battery box; The counterweight layer is located in the middle or bottom of the fire blanket and is used to enhance the fit between the fire blanket and the battery box surface through gravity during the lowering process, thereby improving the sealing and covering effect; The base layer is a flexible, high-temperature resistant substrate that supports the overall structural stability of the fire-resistant layer and the counterweight layer, and allows the fire blanket to be rolled up and stored in the roll box; The fire blanket covers the pressure relief hole on the outside of the battery box in the unfolded state to block the flame from spraying outwards, and the weight layer enhances the fit to avoid deviation caused by airflow impact.

[0015] In a preferred example, the present invention can be further configured as follows: the fire-resistant layer is a glass fiber cloth composite flame-retardant coating structure, which has excellent high-temperature resistance and flame-retardant properties; the counterweight layer is a flexible structure, which is composed of a flexible layer and internal high-density tungsten powder and iron powder fillers, and is used to improve the fit of the fire blanket to the surface of the battery box when unfolded through the action of gravity; the base layer is a high-temperature resistant flexible material, and uses a high-temperature resistant silica material component.

[0016] The beneficial effects achieved by the present invention are: 1. In this invention, the deployment of the fire blanket can be precisely controlled by the motor drive assembly. In addition, in the event of power failure or system failure, the heat-shrinkable traction strips can automatically shrink in a high-temperature environment to achieve redundant deployment, effectively improving the system's fault resistance and safety redundancy.

[0017] 2. In the present invention, the fire blanket adopts a composite structure composed of a fire-resistant layer, a counterweight layer and a base layer. It not only has excellent heat resistance and flame retardant properties, but also can enhance the fit and sealing through the counterweight effect, thereby effectively shielding the pressure relief holes of the battery box, preventing flames from erupting and gas explosions from leaking out. It also fully considers the high-temperature and high-pressure gas emissions generated during the thermal runaway of the battery, and blocks the pressure relief holes by the fire blanket to prevent flames from splashing and explosions from spreading, thereby improving the overall disaster resistance of the battery system.

[0018] 3. In the present invention, the deployment of the fire blanket is precisely controlled by the motor drive assembly. In the event of a power failure or system failure, the heat-shrinkable traction strip automatically shrinks in a high-temperature environment to achieve redundant deployment, effectively improving the system's fault resistance and safety redundancy. The traction mechanism cooperates with the turntable guide groove and the sliding pin block to achieve trajectory control of the fire blanket. The combination of the linear slide groove and guide rod structure ensures the stability and coverage accuracy of the fire blanket during the deployment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the bottom structure of a battery box according to an embodiment of the present invention; Figure 3 This is a structural diagram of a fire blanket in a lowered state according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the exploded structure of a fire extinguishing assembly and a driving assembly according to an embodiment of the present invention; Figure 5 This is a schematic structural diagram of a fire extinguishing assembly according to an embodiment of the present invention; Figure 6 This is a schematic structural diagram of the first turntable and the second turntable according to an embodiment of the present invention; Figure 7 Schematic diagram of the original state and fire extinguishing state of a drive assembly according to an embodiment of the present invention.

[0020] Reference numerals: 100, battery box; 110, sealed top cover; 120, heat conduction plate; 130, pressure relief hole; 140, fireproof bottom plate; 101, guide rod; 102, mounting ear; 200, fire extinguishing assembly; 210, coil box; 220, fire blanket; 230, traction bar; 231, sliding pin block; 300, drive assembly; 310, transmission box; 320, motor; 330, first turntable; 340, second turntable; 341, synchronization gear; 342, side guide groove; 343, transverse guide groove. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features therein can be combined with each other without conflict.

[0022] It is to be understood that these descriptions are illustrative only and are not intended to limit the scope of the invention.

[0023] An electric vehicle battery installation system with a fire control and fire protection structure provided by some embodiments of the present invention will be described below with reference to the accompanying drawings.

[0024] Combine Figure 1-Figure 7 As shown, the present invention provides an electric vehicle battery installation system with a fire control and fire protection structure, including a battery box 100, a fire extinguishing component 200 and a driving component 300: Battery box 100: The battery box 100 is equipped with a sealed top cover 110 and a fireproof bottom plate 140, respectively. A heat conducting plate 120 is mounted inside the top cover. The heat conducting plate 120 has a circulating cooling lumen and is connected to the liquid cooling system to control battery temperature. The fireproof bottom plate 140 is equipped with mounting lugs 102 for mounting and positioning, and guide rods 101 are located at the four corners to guide the movement of the fire blanket.

[0025] The battery box 100 is a sealed box body as a whole. The sealed top cover 110 and the fireproof bottom plate 140 are both high-temperature sealing plate structures. Multiple pressure relief holes 130 are opened on the periphery. When battery thermal runaway occurs, the internal pressure can be quickly released through the pressure relief holes.

[0026] Fire Extinguishing Assembly 200: Several fire extinguishing assemblies 200 are provided, distributed around the periphery of the battery compartment 100. Each assembly includes a reel 210, a fire blanket 220, and a pull bar 230. The fire blanket 220 is initially reeled in the reel 210. One end of the pull bar 230 is connected to the fire blanket 220, and the other end is slidably connected to the fireproof base plate 140 via a sliding pin block 231.

[0027] The traction strip 230 is a flexible heat-shrinkable strip structure that can automatically shrink and release the fire blanket under high temperature conditions, and has passive redundant triggering capabilities.

[0028] The fire blanket 220 consists of three layers: - Fire-resistant layer: Made of glass fiber cloth composite flame retardant coating, providing high-efficiency flame retardant and heat insulation performance; - Counterweight layer: Made of a flexible layer coated with a high-density material such as tungsten powder or iron powder. It uses its own weight to make the fire blanket adhere to the outer shell of the battery box 100 and cover the pressure relief hole 130; - Base layer: Made of high-temperature silicone cloth or aramid fiber cloth, it is both flexible and heat-resistant to ensure structural integrity during the winding and unfolding process.

[0029] Drive assembly 300: The drive assembly 300 includes a transmission box 310, a motor 320, a first turntable 330, and a second turntable 340. The motor 320 is controlled by the fire control system and drives the turntable to move through the synchronous gear 341.

[0030] The surface of the turntable is provided with arc-shaped side guide grooves 342 and transverse guide grooves 343, into which the sliding pin blocks 231 are inserted to achieve the guiding action when the fire blanket is released.

[0031] The sensor suite includes smoke and infrared temperature sensors, which detect fire and trigger the system. A backup power supply ensures that fire suppression can continue even if the main power source is lost.

[0032] Furthermore, this embodiment further improves the system structure and working method based on the embodiment, specifically covering the parts that are not fully developed in the claims, including: 1. Cooperate with guide structure and sliding mechanism In the fire extinguishing assembly 200 , a slide bar is provided at the bottom of the fire blanket 220 , both ends of which are slidably sleeved on the inner side of the guide rod 101 at the bottom of the battery box 100 , and the fireproof bottom plate 140 is provided with a linear slide groove.

[0033] The guide grooves and guide rods 101 coordinate to ensure a stable path for the fire blanket 220 during its lowering motion, preventing tilting or dislocation. Furthermore, the sliding pins 231 are inserted into the arcuate side guide grooves 342 and transverse guide grooves 343 defined on the surfaces of the first and second turntables 330 and 340. These guide grooves provide stable lateral and vertical guidance during turntable rotation. The side guide grooves 342 and transverse guide grooves 343 have different lengths to accommodate the varying lengths and widths of the rectangular battery compartment 100.

[0034] In particular, the two ends of these side guide grooves 342 and the transverse guide groove 343 are at different distances from their respective centers, so that the sliding pin block 231 can be accurately deployed along a specific trajectory during the driving process, ensuring that the fire blanket 220 can completely cover the pressure relief hole 130 area outside the battery box 100.

[0035] 2. Fire control system and sensor linkage mechanism The fire control system is set on the battery system control mainboard, and its input end is connected to the smoke sensor and infrared temperature sensor. These two types of sensors are installed at key positions on the inner wall of the battery box 100.

[0036] When the smoke concentration exceeds a set threshold or the temperature continuously exceeds a certain upper limit, the system will automatically determine it as a fire signal, and the fire control system will control the motor 320 to start, causing the fire extinguishing component 200 to perform a fire extinguishing action.

[0037] The fire control system is also pre-installed with a backup power supply such as a lithium-ion backup battery or supercapacitor to provide independent driving capability when the main battery fails or the power is cut off, ensuring that the system still has complete response capabilities in extreme situations.

[0038] 3. Optimization of the Mechanical Transmission Path of the Drive Assembly 300 The first rotating disk 330 and the second rotating disk 340 are both structures with arc guide grooves, and one side of the two rotating disks is engaged and driven by the synchronous teeth 341 so that they always maintain relative angle coordination.

[0039] The output end of the motor 320 is connected to the first turntable 330 through a synchronous gear transmission. During the driving process, the first turntable 330 and the second turntable 340 rotate synchronously to control the sliding pin block 231 to slide along a specific path in the guide groove, thereby pulling the traction bar 230 to release the fire blanket 220.

[0040] This structure ensures the linear expansion and high-precision positioning of the driving action, realizing a high-reliability fire extinguishing actuator in a compact space.

[0041] 4. Detailed implementation of fire blanket composite material The multi-layer structure of the fire blanket 220 is made of the following materials during the manufacturing process: Fire-resistant layer: Ceramic nano-scale flame-retardant coating is sprayed on the glass fiber cloth, which can maintain its integrity for 15 minutes in a flame of ≥800℃.

[0042] Counterweight layer: Tungsten powder with a particle size of 0.5 to 1 mm is filled inside and encapsulated in a silicone mesh bag and distributed at the bottom of the fire blanket so that it will naturally droop and press against the outer surface of the battery box 100 after being released.

[0043] Base layer: Made of aramid + silicone co-spun composite fabric with a thickness of about 1.2mm to ensure softness and rollability while having structural strength.

[0044] The three layers are hot-pressed and bonded with high-temperature resistant composite adhesive to form an integrated flexible flame-retardant component, which has better long-term high-temperature resistance than a single material layer.

[0045] The working principle and use process of the present invention: This invention integrates the battery thermal control structure with the fire extinguishing system to form a "sensible, responsive, and controllable" active fire prevention mechanism within the electric vehicle battery system. The core principles are as follows: 1. Principle of temperature control and pressure relief linkage: The battery case 100 forms a sealed structure, sealed at the top and bottom by a high-temperature-resistant sealed top cover 110 and a fire-resistant bottom plate 140. A pressure relief hole 130 is preset on the outside of the battery case 100 to quickly release gas in the event of thermal runaway, preventing structural explosion. A liquid cooling circulation chamber is provided in the heat conducting plate 120 and is connected to the battery cooling system. The battery temperature is normally controlled by liquid cooling to prevent thermal runaway.

[0046] 2. Fire Sensing and Signal Triggering Principle: An infrared temperature sensor and a smoke sensor are installed inside the battery compartment 100 to monitor the battery's operating status in real time. When a fire condition (such as abnormal temperature or smoke generation) is detected, the sensor transmits a signal to the fire control system, which initiates the fire extinguishing process. If the main power supply fails, the system automatically switches to the backup power supply to ensure uninterrupted fire extinguishing operations.

[0047] 3. Operating Principle of the Drive Assembly 300: After the fire control system sends a signal, the motor 320 in the drive assembly 300 operates, driving the first turntable 330; this is achieved by meshing with the synchronizing teeth 341 of the second turntable 340. The arcuate side guide grooves 342 and transverse guide grooves 343 on the surfaces of the two turntables guide the sliding pin block 231 to slide along a predetermined trajectory; the sliding pin block 231 drives the traction bar 230 to unfold, releasing the fire blanket 220 to cover the exterior of the battery box 100 and the pressure relief hole.

[0048] 4. Fire blanket fire control principle: Fire blanket 220 is composed of three layers of composite materials: The outer fire-resistant layer resists flames; the built-in counterweight layer strengthens the fit with the battery box 100 to prevent gas explosion; the base layer ensures its flexible winding ability; In the scenario of motor drive failure or system power outage, the heat shrink function of the traction bar 230 body actively deforms under the action of high temperature, achieving passive expansion and forming a redundant trigger path.

[0049] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, illustrative uses of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0050] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. An electric vehicle battery installation system with a fire control and fire fighting structure, characterized in that: include: A battery box (100), a fire extinguishing assembly (200) and a driving assembly (300), wherein the upper and lower surfaces of the battery box (100) are respectively provided with a sealing top cover (110) and a fireproof bottom plate (140), wherein the inner side of the sealing top cover (110) is embedded with a heat conducting plate (120), and the driving assembly (300) is fixed to the bottom surface of the fireproof bottom plate (140); the number of the fire extinguishing assemblies (200) is several and they are distributed one by one on the periphery of the battery box (100), and the fire extinguishing assembly (200) includes a reel box (210), a fire blanket (220) and a traction bar (230), wherein the fire blanket (220) is reeled and arranged on the inner side of the reel box (210), and one end of the traction bar (230) is fixedly connected to the bottom end of the fire blanket (220), and the traction bar (230) is fixedly connected to the bottom end of the fire blanket (220). ) is provided with a sliding pin block (231) slidably mounted on the bottom surface of the fireproof bottom plate (140); the driving assembly (300) includes a transmission box (310), a motor (320), and a first turntable (330) and a second turntable (340) rotatably mounted on the inner side of the transmission box (310); one side of the first turntable (330) and the second turntable (340) are provided with synchronous teeth (341) that mesh with each other for transmission; the surfaces of the first turntable (330) and the second turntable (340) are both provided with side guide grooves (342) and transverse guide grooves (343); the sliding pin block (231) is slidably sleeved on the inner sides of the side guide grooves (342) and the transverse guide grooves (343); the output end of the motor (320) meshes with the synchronous teeth (341) on the surface of the first turntable (330) for transmission.

2. The electric vehicle battery installation system with a fire control and fire protection structure according to claim 1, characterized in that: A circulating cooling lumen is provided on the inner side of the heat conducting plate (120), and an end of the heat conducting plate (120) is connected to a liquid cooling circulation system of an electric vehicle battery, for reducing the operating temperature of the battery.

3. The electric vehicle battery installation system with a fire control and fire protection structure according to claim 1, characterized in that: The battery box (100), the sealing top cover (110) and the fireproof bottom plate (140) are combined to form a sealed box body structure. The sealing top cover (110) and the fireproof bottom plate (140) are uniformly high-temperature resistant sealing plate structures. A plurality of pressure relief holes (130) are provided on the periphery of the battery box (100) for relieving pressure inside the battery box (100).

4. The electric vehicle battery installation system with a fire control and fire protection structure according to claim 1, characterized in that: The traction strip (230) is a flexible heat-shrinkable strip structure, which can shrink and deform under high temperature to pull the fire blanket (220) downward.

5. The electric vehicle battery installation system with a fire control and fire protection structure according to claim 1, characterized in that: The outer periphery of the fireproof bottom plate (140) is fixedly mounted with a plurality of hanging ears (102) located on the outer periphery of the battery box (100) for positioning and mounting the battery box (100). The four feet of the surface of the battery box (100) are fixedly mounted with guide rods (101). The bottom end of the fire blanket (220) is provided with a slide bar, and the two ends of the slide bar are slidably sleeved on the inner side of the guide rod (101).

6. The electric vehicle battery installation system with a fire control and fire protection structure according to claim 1, characterized in that: The input end of the motor (320) is electrically connected to a fire control system, and the input end of the fire control system is electrically connected to a sensor group located inside the battery box (100), and the sensor group includes a smoke sensor and an infrared temperature sensor, which are used to instantly control the operation of the motor (320) in a fire situation, and the input end of the fire control system is electrically connected to a backup power supply.

7. The electric vehicle battery installation system with a fire control and fire protection structure according to claim 1, characterized in that: The bottom surface of the fireproof bottom plate (140) is provided with a linear slide groove for guiding the sliding of the traction bar (230); the side guide grooves (342) and the transverse guide grooves (343) on the surfaces of the first turntable (330) and the second turntable (340) are both arc-shaped, and the distances between the two ends of the side guide grooves (342) and the transverse guide grooves (343) and the center of the first turntable (330) and the second turntable (340) are different.

8. The electric vehicle battery installation system with a fire control and fire protection structure according to claim 1, characterized in that: The fire blanket (220) comprises a multi-layer composite structure, comprising in sequence: A fire-resistant layer, located on the outer surface of the fire blanket (220), is used to provide flame retardancy and heat insulation under the action of high-temperature flames, thereby preventing high temperatures from being directly transferred to the surface of the battery box (100); A counterweight layer, located in the middle or bottom of the fire blanket (220), is used to enhance the fit between the fire blanket (220) and the surface of the battery box (100) by gravity during the lowering process of the fire blanket (220), thereby improving the sealing and covering effect; The base layer is a flexible high-temperature resistant base material, which supports the overall structural stability of the fire-resistant layer and the counterweight layer and allows the fire blanket (220) to be rolled up and stored in the roll box (210); The fire blanket (220) covers the pressure relief hole (130) outside the battery box (100) in the unfolded state, blocking the flame from spraying outwards, while the weight layer enhances the fit and avoids deviation caused by airflow impact.

9. The electric vehicle battery installation system with a fire control and fire protection structure according to claim 8, characterized in that: The fire-resistant layer is a glass fiber cloth composite flame-retardant coating structure, which has excellent high-temperature resistance and flame-retardant properties; the counterweight layer is a flexible structure, which is composed of a flexible layer and internal high-density tungsten powder and iron powder fillers, and is used to improve the fit of the fire blanket (220) to the surface of the battery box (100) when unfolded through the action of gravity; the base layer is a high-temperature resistant flexible material, which is a high-temperature resistant silica material component.

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