Electric vehicle fire prevention device and method in a chassis dynamometer test environment

Abstract

This prevents damage to test equipment and test vehicles due to abnormal conditions that may occur during chassis dynamometer testing. [Solution] The electric vehicle fire response device according to the present invention includes a chassis dynamometer, a main roller, a deployable fire extinguishing tank, an electric winch, a condition measurement unit, and a control unit. When conducting a chassis dynamometer experiment, the main roller is provided on one side of the test vehicle, the deployable fire extinguishing tank has a larger area than the test vehicle and is connected to the main roller via a plurality of unwinding wires that are wound around and unwound from the main roller, the electric winch is located on the opposite side of the test vehicle and is connected to the deployable fire extinguishing tank via a plurality of winding wires, the condition measurement unit collects predetermined information from the test vehicle, and the control unit controls the deployment of the fire extinguishing tank to spread under the test vehicle at predetermined conditions and supply fire extinguishing water so that at least a part of the test vehicle is submerged.

Description

Technical Field

[0001] The present invention relates to an electric vehicle fire response device and method for a chassis dynamometer test environment. Specifically, when predetermined conditions are sensed, the test vehicle is immersed in water up to the height of the battery to prevent risks that may occur in a chassis dynamometer test environment, and to a device and method therefor.

Background Art

[0002] Electric vehicles have been rapidly commercialized in recent years. Before we knew it, electric vehicles have been leading the changes in the automotive industry. Compared with internal combustion engine vehicles, electric vehicles are environmentally friendly, have high energy efficiency, and are a field that has concentrated global policy support and assistance. In electric vehicles, technologies related to batteries are very important. Batteries are closely related to factors such as driving range, charging time, lifespan, and cost, and many experiments and studies have been conducted, especially to enhance safety.

[0003] The lithium-ion batteries widely used in electric vehicles have a high energy density and are efficient. However, lithium-ion batteries have the disadvantage of being vulnerable to high temperatures and impacts. Even with a very low probability, overheating of the battery can cause thermal runaway, which can lead to serious accidents.

[0004] To establish charging infrastructure, technologies for rapidly charging batteries must also be developed. However, even during the charging process, the temperature rise of the battery can still be a problem. Without a separate control technology to control the battery temperature, the electric vehicle era will be delayed accordingly.

[0005] In particular, stricter safety management is required in experimental environments used to develop and verify the performance of electric vehicles. Chassis dynamometer experiments, which evaluate the performance and durability of automobiles, test the vehicle's drivetrain and battery under extreme conditions. During this process, abnormal conditions such as battery overheating can occur due to excessive load. In chassis dynamometer testing environments, which induce high temperatures and high loads to test automobiles, there was a need for technologies that could quickly detect various hazardous elements and technologies that could respond quickly to the detected hazardous elements. [Overview of the project] [Problems that the invention aims to solve]

[0006] One objective of the present invention is to solve the problem of the prior art in which test equipment and test vehicles could be damaged due to various abnormal conditions that could occur during chassis dynamometer testing. Another objective of the present invention is to address the problem of the prior art in which, when conducting chassis dynamometer tests on electric vehicles or hybrid vehicles, unpredictable battery overheating could cause instantaneous thermal runaway. Another objective of the present invention is to solve the problem of the conventional technology, in which, if an abnormal situation occurs during chassis dynamometer testing, there is a high probability that it will result in damage to human life and property. The problems addressed by this invention are not limited to those mentioned above, and other problems and objectives not mentioned should be understood from the following explanation. [Means for solving the problem]

[0007] An electric vehicle fire response device according to one embodiment of the present invention includes a chassis dynamometer, a main roller, a deployable fire extinguishing tank, an electric winch, a condition measurement unit, and a control unit. The chassis dynamometer performs predetermined experiments on a test vehicle located in a test zone. The main roller is provided on one side of the test zone, and the deployable fire extinguishing tank has a larger area than the test zone and is connected to the main roller via a plurality of unwinding wires so that it can be wound around and unwound from the main roller. The electric winch is located on the opposite side of the test zone and is connected to the deployable fire extinguishing tank via a plurality of winding wires. The condition measurement unit is provided on the chassis dynamometer and collects predetermined information from the test vehicle. The control unit controls the deployment of the fire extinguishing tank to spread under the test vehicle and supply fire extinguishing water under predetermined conditions so that at least a portion of the test vehicle is submerged.

[0008] Furthermore, in an electric vehicle fire response device according to one embodiment of the present invention, the deployable fire extinguishing tank is connected to the main roller on one side via a plurality of unwinding wires, and connected to the electric winch on the other side via a plurality of winding wires, and the rotation of the electric winch causes it to unwind from the main roller and cover the test zone.

[0009] Alternatively, in an electric vehicle fire response device according to one embodiment of the present invention, the guide roller is positioned between the main roller and the test zone and pressurizes at least one of the winding wire, the deployable fire extinguishing tank, and the unwinding wire that are unwinding from the main roller in a downward direction.

[0010] Furthermore, the electric vehicle fire response device according to one embodiment of the present invention includes a lifting roller that can adjust the height over which the winding wire passes in at least a portion of the section between the electric winch and the test zone by raising and lowering the winding wire, which is connected to the electric winch, while supporting it.

[0011] Alternatively, in an electric vehicle fire response device according to one embodiment of the present invention, the deployable fire extinguishing tank includes a waterproof cloth that has a waterproof function and is formed over an area larger than the test zone, and an air bag that is folded flat along the outer circumference of the waterproof cloth to a predetermined length, which expands when air is injected through an injection hole and forms a wall along the outer circumference of the waterproof cloth.

[0012] Furthermore, in an electric vehicle fire response device according to one embodiment of the present invention, the deployable fire extinguishing tank includes a plate-shaped guide plate connected to one side of the waterproof cloth where the electric winch is located, a bending surface on which the guide plate is foldable relative to the waterproof cloth, and a pair of water-impermeable membranes connecting both sides of the guide plate to the corresponding air walls.

[0013] Alternatively, in an electric vehicle fire prevention device according to one embodiment of the present invention, the guide plate is formed to be narrower than the overall width of the test vehicle and wider than the wheel track, with an unfolding end that becomes thinner towards the end, and includes winch connection holes formed at the same interval as the wheel track of the test vehicle at both corners of the unfolding end, to which at least two of the winding wires are connected.

[0014] Furthermore, in the electric vehicle fire prevention device according to one embodiment of the present invention, the waterproof cloth includes a rigid reinforcement portion in which the rigidity is reinforced in at least a portion of the area.

[0015] An electric vehicle fire response method according to one embodiment of the present invention includes: a first step of collecting predetermined information from a test booth and test vehicle in which an experiment is conducted and transmitting it to a control unit; a second step of the control unit observing in real time whether the information collected through the first step corresponds to predetermined experiment interruption conditions; a third step in which, once the experiment interruption conditions are derived through the second step, a deployable fire extinguishing tank extends beneath the test vehicle so that the test vehicle is submerged in fire extinguishing water to a predetermined height; and a fourth step of draining the fire extinguishing water that has filled the deployable fire extinguishing tank.

[0016] Furthermore, in the method for responding to electric vehicle fires according to one embodiment of the present invention, the third step includes: a horizontal deployment step in which an electric winch rotates so that the deployable fire extinguishing tank wound around the main roller unravels and spreads out between the test vehicle and the drive roller to cover the test zone; an air wall formation step in which air is injected into the air wall to surround the test vehicle and inflate to a predetermined height; a water tank completion step in which a guide plate is provided at the entry end so that the deployable fire extinguishing tank unravels from the main roller and enters between the test vehicle and the drive roller, and the guide plate is raised to connect the air wall and form a watertight wall section; and a fire water supply step in which a fire water valve is opened to supply fire water so that the test vehicle is submerged to a predetermined height, wherein the entry end is formed in a section of the outer circumference of the waterproof cloth, and the air wall is provided in a state that is folded flat along the outer circumference of the waterproof cloth so as to be connected to both sides of the entry end. [Effects of the Invention]

[0017] According to the present invention, abnormal conditions that may occur in the chassis dynamometer test environment of an electric vehicle can be detected more quickly through real-time monitoring. According to the present invention, if signs of battery overheating or thermal runaway are detected during testing, the cooling and fire extinguishing functions can be activated immediately in response.

[0018] According to the present invention, the damage suffered by the test booth equipped with a chassis dynamometer test environment and the vehicle subjected to the test due to abnormal conditions can be significantly reduced. The fire response devices, including the deployable fire extinguishing tank according to the present invention, have the advantage of being easily applicable to various test environments with different structures, forms, and purposes. The effects of the present invention are not limited to those mentioned above, and other effects not mentioned should be clearly understood by those skilled in the art from the following description. [Brief explanation of the drawing]

[0019] [Figure 1] A drawing conceptually showing the space of a chassis dynamometer laboratory to which an electric vehicle fire response device according to an embodiment of the present invention can be applied. [Figure 2] A front view schematically showing an electric vehicle fire response device according to an embodiment of the present invention. [Figure 3] A side view schematically showing an electric vehicle fire response device according to an embodiment of the present invention. [Figure 4] A perspective view showing an electric vehicle fire response device according to an embodiment of the present invention for explaining a deployable fire tank. [Figure 5] A drawing showing the process in which a deployable fire tank is deployed between a test vehicle and a driving roller by an electric vehicle fire response device according to an embodiment of the present invention. [Figure 6] A drawing showing the process in which a deployable fire tank is deployed between a test vehicle and a driving roller by an electric vehicle fire response device according to an embodiment of the present invention. [Figure 7] A plan view showing the structure of a deployable fire tank by an electric vehicle fire response device according to an embodiment of the present invention. [Figure 8] A plan view showing the structure of a waterproof cloth by an electric vehicle fire response device according to an embodiment of the present invention. [Figure 9] A block diagram briefly showing the main configuration of an electric vehicle fire response device according to an embodiment of the present invention.

Embodiments for Carrying Out the Invention

[0020] Hereinafter, the embodiments disclosed in this specification will be described in detail with reference to the accompanying drawings. The same or similar reference numerals are used for the same or similar components, and repetitive descriptions may be omitted.

[0021] When a component is referred to as being "connected" or "attached" to another component, it means that the corresponding component may be directly connected or attached to the other component, or other components may intervene therebetween. On the other hand, if a component is explicitly described as "directly linked" or "directly connected," it means that no other component intervenes.

[0022] As used herein, expressions such as “includes” or “possesses” indicate that certain features, stages, operations, components, parts, or combinations thereof are included, and do not exclude any part thereof. Furthermore, the first direction (X-axis direction), second direction (Y-axis direction), and third direction (Z-axis direction) referred to herein are used to describe the three-dimensional shape in three-dimensional space, and these directions are mutually orthogonal to each other.

[0023] This invention relates to an electric vehicle fire response device and an electric vehicle fire response method utilizing the same. In particular, the present invention can be applied to specific test environments and equipment such as a chassis dynamometer 100.

[0024] A variety of unpredictable situations can occur in the test environment of the chassis dynamometer 100. These can, in some cases, result in harm to human life or equipment. Therefore, the fire response device and method of the present invention prevent dangerous situations and accidents by quickly detecting predetermined conditions in such environments and responding promptly.

[0025] Figure 1 is a conceptual diagram showing a chassis dynamometer 100 laboratory space to which an electric vehicle fire prevention device according to one embodiment of the present invention can be applied. The test booth 10 may be designed as an open or closed structure to fit a predetermined space. Inside the test booth 10, a test zone T is formed where the test vehicle 1 is placed. Test zone T is formed with an area larger than test vehicle 1 to ensure that test vehicle 1 does not leave the test zone T area.

[0026] A fire response device according to one embodiment of the present invention can also be applied to experimental environments and spaces as illustrated in Figure 1. The chassis dynamometer 100 is a device that simulates vehicle driving conditions to primarily evaluate engine performance, drivetrain operation, battery efficiency, and other factors. Test vehicle 1 will operate under extremely harsh conditions that are far from ordinary.

[0027] Referring to Figure 1, the chassis dynamometer 100 has a bottom surface formed by a flat base plate 110. It may also be implemented in a sealed test booth 10 that is isolated from the outside, or in a test booth 10 in which at least a portion is open around the base plate 110. The test zone T is formed in a portion of the upper surface of the base plate 110. The test zone T has a predetermined size and is formed so that the area in which the test vehicle 1 is placed is clearly distinguishable.

[0028] The test vehicle 1 is positioned on the test zone T. The front and rear wheels of the test vehicle 1 are placed on the drive rollers 112 at their corresponding positions. In one embodiment of the present invention, the test vehicle 1 is positioned on the test zone T such that the normal driving direction is the X-axis direction.

[0029] Figure 2 is a schematic front view showing an electric vehicle fire prevention device according to one embodiment of the present invention. As shown in Figure 2, the test vehicle 1 may be positioned and fixed within the test zone T. The test vehicle 1 is configured not to deviate from a predetermined area within the test zone T. The chassis dynamometer 100 may further include a fixing module 120 that fixes the test vehicle 1 within an permitted area within the test zone T.

[0030] The fixing module 120 may consist of multiple fixing arms, such as a first fixing arm 130 and a second fixing arm 140. The first fixing arm 130 may include a first pressurizing section 132 that contacts the body of the test vehicle 1, and the second fixing arm 140 may include a second pressurizing section 142 that pressurizes and fixes the test vehicle 1 together with the first pressurizing section 132.

[0031] The chassis dynamometer 100 may be equipped with a blower module 150 that forms an airflow around the test vehicle 1 depending on the experimental conditions. The blower module 150 is equipped with an air outlet 152 that guides the airflow in a predetermined direction.

[0032] The test vehicle 1 is mounted on each drive roller 112, with a pair of front wheels and a pair of rear wheels in contact with the corresponding drive rollers 112. The drive rollers 112 rotate around drive shafts 114 that are arranged parallel to each other, and the rotational motion of these drive rollers 112 may simulate predetermined driving conditions for the test vehicle 1.

[0033] A fire response device according to one embodiment of the present invention includes a chassis dynamometer 100, a main roller 200, a deployable fire extinguishing tank 300, an electric winch 230, a condition measurement unit 920, and a control unit 900.

[0034] The main roller 200 stores the deployable fire extinguishing tank 300 by winding it around its outer circumference. The main roller 200 is connected to the deployable fire extinguishing tank 300 via at least two unwinding wires 20. The main roller 200 is positioned at a predetermined distance from one side of the test zone T. The main roller 200 may also be positioned in front of the test vehicle 1, which is located in the test zone T.

[0035] The main roller 200 may include a cylindrical core member, at least a portion of which is formed to be longer than the width of the test zone T. As the main roller 200 rotates about its longitudinal direction (Z-axis direction), the unwinding wire 20 connected to the main roller 200 is wound around the outer circumference of the main roller 200.

[0036] Furthermore, the multiple unwinding wires 20 are pulled at their respective connection points to the deployable fire extinguishing tank 300 so that the deployable fire extinguishing tank 300 is wound smoothly along the outer circumference of the main roller 200 without wrinkles. The deployable fire extinguishing tank 300 may be stored in this manner, wrapped around the outer circumference of the main roller 200.

[0037] The electric winch 230 is located on the opposite side of the main roller 200 and at a predetermined distance behind the test zone T. In other words, test zone T will be located between the main roller 200 and the electric winch 230. The main roller 200 and the electric winch 230 may be arranged on the same plane, and their respective axes of rotation may be set parallel to each other.

[0038] In one embodiment of the present invention, the deployable fire extinguishing tank 300 may be connected to the unwinding wire 20 and the winding wire 30 at various points along its outer circumference on all four sides.

[0039] A pair of unwinding wires 20 connect the deployable fire extinguishing tank 300 to the main roller 200, and the rotation of the main roller 200 pulls the deployable fire extinguishing tank 300 so that it is wound onto the main roller 200, or pulls the deployable fire extinguishing tank 300 that has unraveled from the main roller 200 in the longitudinal direction of each unwinding wire 20 so that it spreads out.

[0040] A pair of winding wires 30 connect the deployable fire extinguishing tank 300 to the electric winch 230. When the electric winch 230 rotates in a predetermined direction, it pulls the deployable fire extinguishing tank 300 toward the electric winch 230 so that it unwinds from the main roller 200.

[0041] Figure 3 is a schematic side view showing an electric vehicle fire response device according to one embodiment of the present invention, and Figure 4 is a perspective view shown to illustrate the deployable fire extinguishing tank 300 in the electric vehicle fire response device according to one embodiment of the present invention.

[0042] As shown in Figures 3 and 4, the deployable fire extinguishing tank 300 includes a waterproof cloth 400, an air wall 500, and a guide plate 600. The deployable fire extinguishing tank 300 is formed to be wide enough to cover the entire upper surface of the test zone T, and has a thin overall thickness.

[0043] The waterproof cloth 400 is a water-repellent cloth that can be made into various shapes such as rectangles, circles, and hexagons, and is formed to a size that can cover the entire upper surface of the test zone T. The waterproof cloth 400 may have a connecting end 420 with a connecting hole 422 into which a winding wire 20 can be attached, and an entry end 430 facing the connecting end 420 to which a guide plate 600 is attached.

[0044] The airwall 500 may be formed to extend along the outer section of the upper surface of the waterproof fabric 400. The air wall 500 is formed continuously along the outer perimeter of the waterproof cloth 400 with a predetermined width. The air wall 500 can be connected to both sides of the entry end 430 to which the guide plate 600 is attached, and to both ends of the air wall 500. The size of the airwall 500 and guide plate 600 may be determined considering the overall width and length of test vehicle 1.

[0045] Therefore, when the deployable fire extinguishing tank 300 forms a series of water storage spaces, the test vehicle 1 can take on a form in which its outer perimeter is surrounded by an air wall 500 and a guide plate 600. The air wall 500 can be embodied in a tube capable of storing air. When air is injected, the air wall 500 expands to form a wall along a predetermined path. The air wall 500 may include at least one injection hole 510. The injection hole 510 is an air inlet or outlet into which air can be injected through a compressor 700 and an air hose 710.

[0046] Before air is injected through the injection holes 510, the airwall 500 is kept flat and in close contact with the surface of the waterproof fabric 400. The waterproof fabric 400 may have an entry end 430 formed on a portion of its outer circumference. As shown in the illustration, in one embodiment of the present invention, the waterproof cloth 400 may be formed in a rectangular shape.

[0047] The waterproof cloth 400 may be a rectangle in which two short sides and two long sides are formed parallel to each other, and one of the two short sides, the one adjacent to the main roller 200, may be formed as a connecting end 420. Furthermore, the short side opposite the connecting end 420, which is closer to the electric winch 230, is formed as the entry end 430.

[0048] The airwall 500 may be formed to be elongated to a predetermined width along two long sides connected to both sides of the connecting end 420 of the waterproof fabric 400, with the connecting end 420 as the center. The airwall 500 is formed to surround a certain section of the outer perimeter of the waterproof fabric 400, and both ends are connected to both ends of the entry ends 430 formed in the waterproof fabric 400.

[0049] A guide plate 600 is connected to the entry end 430. The guide plate 600 is made of a plate-like material such as metal or plastic that has relatively high durability and rigidity and is relatively thin in thickness. The guide plate 600 includes a towing end 606 located adjacent to the entry end 430, and a straight deployment end 604 extending toward the opposite side of the towing end 606, which faces the direction of the electric winch 230 with respect to the waterproof cloth 400.

[0050] The towing end 606 is connected to the entry end 430 of the waterproof cloth 400 via a bending surface 610. The bending surface 610 is formed so that the guide plate 600 is naturally inclined at a predetermined angle relative to the waterproof cloth 400. In other words, multiple winch connection holes 602 are formed adjacent to the deployed end 604 of the guide plate 600, and each winch connection hole 602 is connected to the winding wire 30.

[0051] Multiple winding wires 30 can be arranged so that tensile forces of different magnitudes and directions act on the unfolded ends 604 of the guide plate 600. When an external force is applied to the guide plate 600 through the multiple winding wires 30, the guide plate 600 will bend flexibly from the waterproof fabric 400 around the bending surface 610.

[0052] As shown in Figures 3 and 4, once the deployable fire extinguishing tank 300 has detached from the main roller 200 and spread out over the test zone T, the test vehicle 1 is placed on top of the deployable fire extinguishing tank 300. In other words, the deployable fire extinguishing tank 300 will pass between the tires of the test vehicle 1 and the surfaces of their respective drive rollers 112, which are in contact with each other, and will cover the upper part of the test zone T. Since the positions of the test zone T and the test vehicle 1 are restricted, the deployable fire extinguishing tank 300 will form a series of layers (bottom surfaces) that divide the space between the test vehicle 1 and the test zone T vertically.

[0053] In other words, the waterproof cloth 400 covers the test zone T area formed on the base plate 110, and the test vehicle 1 is positioned on top of it. When the deployable fire extinguishing tank 300 is deployed in the direction of the electric winch 230 and spreads widely under the test vehicle 1 between the main roller 200 and the electric winch 230, the control unit 900 activates the compressor 700, and the air hose 710 connected to the compressor 700 injects air through the injection hole 510 to inflate the air wall 500.

[0054] The waterproof fabric 400 forms the bottom of the water storage space, and the air wall 500 and guide plate 600 are connected to the waterproof fabric 400 to form a water storage wall that allows water to be stored. As shown in the diagram, the air wall 500 forms a long, continuous wall surrounding three sides of the rectangular waterproof cloth 400, and in the section of the entry end 430 where the air wall 500 is not connected, the guide plate 600 is raised at a predetermined angle to form a wall.

[0055] A waterproof curtain 620 is provided on each side of the guide plate 600. Each waterproof curtain 620 seals the gap between the side edge of the air wall 500 and the guide plate 600, preventing water leakage even if the tilt of the guide plate 600 changes. When the air wall 500 expands to form a wall at a predetermined height, and the guide plate 600, together with the air wall 500, forms a water storage space on the waterproof cloth 400, the control unit 900 activates the pump 810 connected to the water storage tank 800 and opens the fire extinguishing water valve 820 that had been closing the fire extinguishing water nozzle 830.

[0056] The control unit 900 fills the water storage space, which is made up of a waterproof cloth 400, an air wall 500, and a guide plate 600, with fire extinguishing water through the fire extinguishing water nozzle 830 so that the test vehicle 1 on top of the deployable fire extinguishing tank 300 can be submerged in the fire extinguishing water to a predetermined height.

[0057] Figures 5 and 6 are diagrams illustrating the process by which a deployable fire extinguishing tank 300 is deployed between a test vehicle 1 and a drive roller 112 in an electric vehicle fire response device according to one embodiment of the present invention. As shown in Figures 5 and 6, a fire response device according to one embodiment of the present invention can be applied to specific experimental equipment in a vehicle.

[0058] On the chassis dynamometer 100, each drive roller 112 rotates around a drive shaft 114 that is parallel to each other, so that all the tires of the test vehicle 1 are placed on these drive rollers 112. This allows the test vehicle 1 to experience conditions very similar to those of an actual driving environment, even while it is fixed within the test zone T.

[0059] The deployable fire extinguishing tank 300 is installed in front of test zone T while wound onto the main roller 200. When the deployable fire extinguishing tank 300 is wound around the main roller 200, the entry end 430 and the guide plate 600 are located at the outermost edge of the wound surface. The winding wire 30 is connected to each of the multiple winch connection holes 602 formed in the guide plate 600, and then connected to the electric winch 230.

[0060] The base plate 110 or test booth 10 may be equipped with a performance measurement unit 910 and a condition measurement unit 920. The performance measurement unit 910 collects predetermined experimental information from the test vehicle 1. The condition measurement unit 920 monitors the inside of the test vehicle 1 and / or the test booth 10. The condition measurement unit 920 can monitor predetermined conditions in real time, such as changes in the battery temperature of the test vehicle 1, indoor air data of the test vehicle 1, and the degree of wear and heat generation of specific tires.

[0061] The information collected through the condition measurement unit 920 is analyzed by the control unit 900, and the control unit 900 makes a real-time determination of whether the test booth 10, base plate 110, or test vehicle 1, which is currently undergoing the experiment, meets a predetermined experiment interruption condition based on the collected information.

[0062] If the control unit 900 determines that the conditions for interrupting the experiment have been met, the drive rollers 112 of the chassis dynamometer 100 and the drive shaft 114 of the test vehicle 1 can be switched to the neutral position. Furthermore, the electric winch 230 rotates rapidly in a predetermined direction, winding up multiple winding wires 30, causing the deployable fire extinguishing tank 300, which is connected to the winding wires 30, to unwind from the main roller 200 and spread out in the direction of the electric winch 230.

[0063] In this case, a guide roller 210 may be provided between the main roller 200 and the test zone T. The guide roller 210 can move up or down vertically. When the control unit 900 derives an experimental interruption condition and the electric winch 230 is activated, the guide roller 210 moves vertically downward, guiding the winding wire 30 and the deployable fire extinguishing tank 300 released from the main roller 200 so that they can smoothly enter and pass between the drive roller 112 and the tires of the test vehicle 1.

[0064] Therefore, the guide roller 210 is installed above the winding wire 30, the deployable fire extinguishing tank 300, and the unwinding wire 20, and moves downward as needed to appropriately lower the height at which the winding wire 30, the deployable fire extinguishing tank 300, and the unwinding wire 20 enter the underside of the test vehicle 1.

[0065] A lifting roller 220 is provided between test zone T and the electric winch 230. The lifting roller 220 is positioned below the winding wire 30, which is either wound towards the electric winch 230 or unwound from the electric winch 230.

[0066] The winding wire 30 will pass over the lifting roller 220 between the electric winch 230 and the test zone T. Therefore, by raising or lowering the lifting roller 220, the winding wire 30 that is wound towards the electric winch 230 can be adjusted to pass through a predetermined height between the electric winch 230 and the test zone T.

[0067] The lifting roller 220 descends to a position close to the surface of the base plate 110 when the electric winch 230 rotates to pull the winding wire 30 and release the deployable fire extinguishing tank 300 from the main roller 200. In other words, the force pulling the winding wire 30, the deployable fire extinguishing tank 300, and the unwinding wire 20 that are wound onto the electric winch 230 is applied as linearly as possible in the section between the test zone T and the test vehicle 1.

[0068] Once the deployable fire extinguishing tank 300 has expanded to fully cover the test zone T and the test vehicle 1 is positioned inside the water storage space formed by the waterproof cloth 400 and the air wall 500, the lifting roller 220 rises upward, raising the winding wire 30 to a predetermined height.

[0069] Therefore, as shown in Figure 6, the winding wires 30 connected to the winch connection holes 602 adjacent to the deployed end 604 of the guide plate 600 can raise the guide plate 600 so that it can form a portion of the watertight wall of the reservoir space together with the air wall 500.

[0070] Through this process, when the control unit 900 detects the conditions for interrupting the experiment, the deployable fire extinguishing tank 300 dissolves and forms a water storage space, and the control unit 900 opens the fire extinguishing water valve 820 to supply fire extinguishing water so that the test vehicle 1 can be submerged to a predetermined height.

[0071] The fire extinguishing water supplied to the deployable fire extinguishing tank 300 through the fire extinguishing water nozzle 830 may, after fulfilling predetermined purposes such as cooling the battery and extinguishing the fire, be quickly sent to the wastewater tank through a separately provided drain outlet.

[0072] Figure 7 is a plan view illustrating the structure of the deployable fire extinguishing tank 300 in an electric vehicle fire response device according to one embodiment of the present invention, and Figure 8 is a plan view illustrating the structure of the waterproof cloth 400 in an electric vehicle fire response device according to one embodiment of the present invention.

[0073] As shown in Figure 7, in a fire-fighting device according to one embodiment of the present invention, the waterproof cloth 400 may further include a rigid reinforcing portion 410. The rigid reinforcement section 410 is formed at a position corresponding to the tires of the test vehicle 1 when the deployable fire extinguishing tank 300 extends under the test vehicle 1. The rigid reinforcement section 410 is formed by overlapping a friction-resistant and highly durable fabric on or inside its surface, reinforcing a portion of the waterproof cloth 400 to make it more rigid. The rigid reinforcement section 410 may also be formed to connect the winch connection hole 602 and the connection hole 422 of the connection end 420 along the X-axis direction.

[0074] This works to better transmit planar forces between the winch connecting hole 602 and the connecting end 420, where tensile forces are concentrated through each of the unwinding wire 20 and winding wire 30.

[0075] The entry end 430 of the waterproof cloth 400 is connected to the towing end 606 of the guide plate 600. Specifically, a bending surface 610 is interposed between the towing end 606 and the entry end 430. The bending surface 610 plays a role in firmly connecting the waterproof cloth 400 and the traction end 606 of the guide plate 600, as well as in facilitating the guide plate 600 to rise up in a series of angles relative to the waterproof cloth 400.

[0076] The width of the towing end 606 of the guide plate 600 may be wider than the overall width of the test vehicle 1, while the opposite unfolding end 604 may be narrower than the overall width of the test vehicle 1 and wider than the widthwise spacing of the wheels of the test vehicle 1. In addition, if there are pairs of winch connecting holes 602 formed adjacent to the unfolding end 604, each of them is formed around the unfolding end 604 of the guide plate 600 so as to have the same width as the wheel track of the test vehicle 1.

[0077] As shown in Figure 8, in a fire-fighting device according to one embodiment of the present invention, the waterproof cloth 400 includes a connecting end 420 formed relatively close to the main roller 200 and an entry end 430 formed relatively close to the electric winch 230. The waterproof cloth 400 may also have a continuously long, extended deformable section 440 with a predetermined width formed along the outer casing of two opposing long sides and adjacent to the connecting end 420. An air wall 500 is provided in the extended deformable section 440.

[0078] Figure 9 is a simplified block diagram showing the main components of an electric vehicle fire prevention device according to one embodiment of the present invention. Referring to the block diagram shown in Figure 9, the fire response method according to one embodiment of the present invention can be realized by using the fire response device described above.

[0079] A fire response method according to one embodiment of the present invention includes a first step (S10) of collecting predetermined information from the test booth 10 and test vehicle 1 where the experiment is conducted and transmitting it to the control unit 900; a second step (S20) in which the control unit 900 observes in real time whether predetermined experiment interruption conditions are met based on the information collected through the first step (S10); a third step (S30) in which, if the experiment interruption conditions are derived by the control unit 900, the deployable fire extinguishing tank 300 is unfolded under the test vehicle 1 and transformed into a water tank so that the test vehicle 1 is submerged in fire extinguishing water to a predetermined height; and a fourth step (S40) of quickly draining the fire extinguishing water filled in the deployable fire extinguishing tank 300.

[0080] Furthermore, the third stage (S30) may further include a horizontal deployment stage, an air wall 500 formation stage, a water storage tank 800 completion stage, and a fire extinguishing water supply stage. In the horizontal deployment phase, the electric winch 230 rotates, causing the deployable fire extinguishing tank 300, which is wound around the main roller 200, to unwind between the test vehicle 1 and the drive roller 112 and spread out to cover the test zone T. The airwall 500 formation stage involves injecting air into the airwall 500 to surround at least a portion of the outer perimeter of the test vehicle 1, thereby inflating it to a predetermined height.

[0081] In the completed stage of the reservoir 800, a guide plate 600 provided at the entry end 430 is raised so that the water melts out from the main roller 200 and is fed between the test vehicle 1 and the drive roller 112, forming a watertight wall section that connects to the air wall 500. In the firefighting water supply stage, the firefighting water valve 820 is opened so that test vehicle 1 is submerged in firefighting water to a predetermined height.

[0082] The embodiments of the present invention have been described above with reference to the drawings. The embodiments and drawings described are merely illustrative and may be modified in various ways within the scope of the technical idea of ​​the present invention. The embodiments described should be considered part of the present invention, and the scope of the invention is not limited to such embodiments.

[0083] The scope of this invention should be determined by the technical concept described in the claims. Furthermore, even if the actions or effects of a particular configuration are not explicitly described in the described examples, the predictable actions or effects of that configuration are included within the scope of the present invention. [Explanation of symbols]

[0084] 1 Test Vehicle 10 Test Booths 20 unwound wires 30 reel wire 100 Chassis Dynamometer 110 Base Plate 112 Drive rollers 114 Drive shaft 120 Fixed Modules 130 First Fixed Arm 132 First pressurization section 140 Second Fixed Arm 142 Second pressurization section 150 Blower Module 152 Air outlet 200 Main Roller 210 Guide Roller 220 Lifting Rollers 230 Electric Winch 300 Deployable Fire Tank 400 waterproof cloth 410 Rigidity reinforcement section 420 Connecting end 422 Binding hole 430 Entry end 440 Expanded deformation section 500 Airwall 510 injection holes 600 Guide Plate 602 Winch connection hole 604 Expanded end 606 Towing end 610 Bending surface 620 Waterproof curtain 700 Compressor 710 Air Hose 800 water tanks 810 Pump 820 Fire water valve 830 Fire extinguishing water nozzle 900 Control Unit 910 Performance Measurement Unit 920 Condition Measurement Unit

Claims

1. A chassis dynamometer is used to perform predetermined experiments on test vehicles located in a test zone. A main roller provided on one side of the aforementioned test zone, A deployable fire extinguishing tank having a larger area than the aforementioned test zone and connected to the main roller via multiple unwinding wires so as to be wound onto and unwound from the main roller, An electric winch is located on the opposite side of the test zone and connected to the deployable fire extinguishing tank via multiple winding wires. The chassis dynamometer is equipped with a condition measurement unit that collects predetermined information from the test vehicle, and An electric vehicle fire response device characterized by including a control unit that, under predetermined conditions, expands the deployable fire extinguishing tank under the test vehicle and supplies fire extinguishing water to control the system so that at least a portion of the test vehicle is submerged.

2. The electric vehicle fire response device according to claim 1, characterized in that the deployable fire extinguishing tank is connected to the main roller on one side via a plurality of unwinding wires, and connected to the electric winch on the other side via a plurality of winding wires, and unwinds from the main roller and covers the test zone when the electric winch rotates.

3. The electric vehicle fire response device according to claim 2, further comprising a guide roller positioned between the main roller and the test zone, which pressurizes at least one of the winding wire, the deployable fire extinguishing tank, and the unwinding wire downwards, as the device is positioned between the main roller and the test zone.

4. The electric vehicle fire response device according to claim 2, further comprising a lifting roller that adjusts the passage height of the winding wire in at least a portion of the section between the electric winch and the test zone by raising and lowering while supporting the winding wire connected to the electric winch.

5. The aforementioned deployable fire extinguishing tank is A waterproof fabric having a waterproof function and forming a larger area than the test zone, and The electric vehicle fire prevention device according to claim 1, comprising an air bag that is folded flat along the outer circumference of the waterproof cloth to a predetermined length, and which inflates when air is injected through an injection hole to form a wall along the outer circumference of the waterproof cloth, and an air wall.

6. The aforementioned deployable fire extinguishing tank is A plate-shaped guide plate is connected to one side of the waterproof cloth where the electric winch is located. The guide plate has a bending surface that is foldable relative to the waterproof cloth, and The electric vehicle fire response device according to claim 5, further comprising a pair of water-blocking curtains connecting both sides of the guide plate to the corresponding air walls.

7. The aforementioned guide plate is The front end of the guide plate, which is narrower than the overall width of the test vehicle and wider than the wheel track, and whose thickness gradually decreases towards the end, The electric vehicle fire prevention device according to claim 6, further comprising winch connection holes formed at both corners of the deployed end to have the same spacing as the wheel track of the test vehicle, and to which at least two of the winding wires are connected.

8. The aforementioned waterproof cloth is The electric vehicle fire prevention device according to claim 5, characterized in that it includes a rigidity-reinforced portion in which the rigidity is reinforced in at least a portion of the area.

9. The first stage involves collecting predetermined information from the test booth and test vehicle where the experiment is conducted and transmitting it to the control unit. The control unit then performs a second step in which it observes in real time whether the information collected throughout the first step corresponds to a predetermined experimental interruption condition. Once the experimental interruption conditions are derived through the second stage, the third stage proceeds, in which the deployable fire extinguishing tank extends beneath the test vehicle, and the test vehicle is submerged in fire extinguishing water up to a predetermined height. A method for responding to an electric vehicle fire, characterized by including a fourth stage of draining the fire extinguishing water that has filled the deployable fire extinguishing tank.

10. XL Stage 3 is, In the horizontal deployment phase, the electric winch rotates, and the deployable fire extinguishing tank, which is wound around the main roller, unwinds between the test vehicle and the drive roller and spreads out to cover the test zone. Air wall formation step: In this step, air is injected into the air wall to surround at least a portion of the outer perimeter of the test vehicle and inflate it to a predetermined height. In the completed stage of the reservoir tank, a guide plate provided at the entry end is raised so that the water melts out from the main roller and is fed between the test vehicle and the drive roller, forming a watertight wall section that connects the air wall, and The method for responding to an electric vehicle fire according to claim 9, characterized in that it includes a fire water supply step of opening a fire water valve and supplying fire water so that the test vehicle is submerged to a predetermined height.

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