Electric car fire prevention system

Abstract

The present invention relates to an electric car fire prevention system comprising: a fire extinguishing water supply device having a plurality of fire extinguishing water supply pipes installed therein to supply fire extinguishing water; a water supply device cover formed such that the plurality of fire extinguishing water supply pipes can be placed therein; a plurality of temperature sensors installed outside the water supply device cover; and a control device for performing a fire prevention operation according to the real-time temperature of an electric car battery obtained from the plurality of temperature sensors.

Description

Electric vehicle fire prevention system

[0001] The present invention relates to electric vehicle fire prevention technology, and more specifically, to an electric vehicle fire prevention system that detects the battery temperature of a parked electric vehicle and sprays water onto the battery to lower the battery temperature before thermal runaway occurs.

[0002]

[0003] Electric vehicles utilize lithium-ion batteries, which are installed in the undercarriage of the vehicle. While lithium-ion batteries offer advantages such as fast charging, a compact size, and lightweight design, they have the disadvantage of being more susceptible to fire compared to other types of batteries. Battery fires are primarily caused by thermal runaway. Although the average optimal temperature for an electric vehicle battery is 20 to 30 degrees Celsius, exothermic reactions occur at approximately 60 to 80 degrees Celsius during the initial stages of thermal runaway. If the battery is not properly cooled at this point, the temperature continues to rise, increasing the rate of thermal energy generation and leading to a runaway reaction. A fire resulting from such thermal runaway persists until all the energy stored in the battery is released. Furthermore, because batteries are installed in the vehicle's undercarriage, it is difficult to extinguish the fire using standard fire extinguishers or fire suppression systems. Consequently, if a fire occurs in an electric vehicle battery, early suppression is difficult, and the fire inevitably spreads to surrounding vehicles or buildings, resulting in significant damage.

[0004] Recently, electric vehicle (EV) fires have been occurring frequently and resulting in significant damage, emerging as a social issue; however, there is currently no system in place to prevent or effectively extinguish these fires. In particular, if a fire occurs in an EV parked or charging in an underground parking lot, the fire can spread to surrounding vehicles and generate large amounts of toxic gas if not suppressed quickly due to the nature of underground facilities, potentially causing fatal casualties. Therefore, measures to prevent fires before they occur are urgently required.

[0005]

[0006] The objective of the present invention is to provide an electric vehicle fire prevention system that detects the battery temperature of an electric vehicle using a heat sensing sensor and lowers the battery temperature by spraying water onto the battery before thermal runaway occurs.

[0007] The objective of the present invention is to provide an electric vehicle fire prevention system in which a heat sensor detects the temperature and causes extinguishing water to be sprayed in advance before a fire occurs, so that even if a fire occurs due to a chemical reaction in the battery, the electric vehicle fire can be suppressed early by the extinguishing water being sprayed in advance.

[0008]

[0009] A first aspect of the present invention for achieving the above objective comprises an electric vehicle fire prevention system, the fire extinguishing water supply device having a plurality of water supply fire extinguishing pipes installed to supply fire extinguishing water, a water supply device cover formed to accommodate the plurality of water supply fire extinguishing pipes, a plurality of temperature sensors installed on the outside of the water supply device cover, and a control device that performs a fire prevention operation according to the real-time temperature of the electric vehicle battery obtained from the plurality of temperature sensors.

[0010] Preferably, the fire extinguishing water supply device may include a plurality of central pipes equipped with radial nozzles that spray fire extinguishing water horizontally in the lower battery portion of the electric vehicle, and two side pipes equipped with direct injection nozzles that spray fire extinguishing water vertically to form a water wall on the roof and sides of the electric vehicle.

[0011] Preferably, the water supply device cover may include a central cover covering the plurality of central pipes and two side covers covering each of the two side pipes.

[0012] Preferably, the system may further include a plurality of vehicle guidance lights installed on the inside of the two side covers, and a detection sensor installed on at least one of the two side covers to detect the presence or absence of a parked electric vehicle.

[0013] Preferably, the control device may include a guide light management unit that turns off the plurality of vehicle guide lights when a parked electric vehicle is detected through the detection sensor; a license plate recognition unit that recognizes the license plate of the parked electric vehicle; a temperature information transmission unit that provides real-time temperature information regarding the battery of the parked electric vehicle to the owner's user terminal based on the recognized license plate; a temperature information output unit that outputs the real-time temperature information of the battery so as to correspond to the installation location of the temperature sensor where the temperature information was obtained; and a fire prevention operation unit that performs a fire prevention operation when a preset temperature is reached according to the real-time temperature of the battery.

[0014] Preferably, it may further include a cooling fan for lowering the temperature of the cover of the electric vehicle battery, and a cooling fan cover that opens and closes in a sliding manner so that the cooling fan is exposed to the outside only under specific conditions.

[0015] Preferably, when the parking of the electric vehicle is recognized through the detection sensor, the control device can open the cooling fan cover and operate the cooling fan for a preset time.

[0016] Preferably, the temperature information output unit can distinguish and display areas corresponding to the installation locations of the temperature sensors in different colors according to the temperature obtained from each of the plurality of temperature sensors.

[0017] Preferably, when the temperature of the battery reaches a preset temperature, the fire prevention operating unit may provide an alarm to the vehicle owner's user terminal and cause a fire signal to sound through a fire hydrant relay or fire hydrant transmitter, thereby providing an alarm to the management office connected to the fire hydrant relay or fire hydrant transmitter.

[0018] Preferably, the fire prevention operating unit may open the solenoid valve of the fire extinguishing water supply device so that fire extinguishing water is sprayed through the fire extinguishing water supply device when the temperature of the battery reaches a preset temperature.

[0019] Preferably, the fire prevention operating unit can lock the solenoid valve and stop the fire hydrant operation when the temperature of the electric vehicle battery falls below a preset temperature.

[0020] Preferably, the system further includes a flame detector installed on the outside of the water supply device cover and a fire blocker installed to surround the parking space of the electric vehicle, wherein the fire blocker may include a barrier that traps fire extinguishing water supplied from the fire extinguishing water supply device inside, and a lift that moves the barrier so that the barrier unfolds and folds in the vertical direction.

[0021] Preferably, the fire prevention operating unit can operate the lift of the fire breaker when a flame is detected by the flame detector to spread the barrier, thereby trapping the fire extinguishing water supplied to the parking space of the electric vehicle inside the barrier.

[0022]

[0023] As described above, according to the present invention, it is possible to protect expensive electric vehicles and buildings and facilities from fire, and to protect human lives from fire and toxic gases.

[0024]

[0025] FIG. 1 is a drawing of an electric vehicle fire prevention system according to a preferred embodiment of the present invention.

[0026] FIG. 2 is a drawing of a fire extinguishing water supply device according to one embodiment.

[0027] FIG. 3 is a drawing of a water supply device cover according to one embodiment.

[0028] FIG. 4 is a drawing for explaining a vehicle guidance light and a temperature sensor according to one embodiment.

[0029] FIGS. 5 and 6 are drawings for explaining a cooling fan according to one embodiment.

[0030] FIGS. 7 and 8 are drawings of a control device according to one embodiment.

[0031] FIG. 9 is a flowchart illustrating a method for preventing electric vehicle fires performed in a control device according to one embodiment.

[0032] FIGS. 10 to 13 are illustrative diagrams for explaining the operation of an electric vehicle fire prevention system according to one embodiment.

[0033] FIG. 14 is an illustrative diagram for explaining the operation of a fire breaker according to one embodiment.

[0034]

[0035] The advantages and features of the present invention and the methods for achieving them will become clear from the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms; these embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Throughout the specification, the same reference numerals refer to the same components. "And / or" includes each of the mentioned items and all combinations of one or more.

[0036] Although terms such as "first," "second," etc. are used to describe various elements, components, and / or sections, it goes without saying that these elements, components, and / or sections are not limited by these terms. These terms are used merely to distinguish one element, component, or section from another. Accordingly, it goes without saying that the first element, first component, or first section mentioned below may be a second element, second component, or second section within the technical scope of the present invention.

[0037] Furthermore, the identifiers (e.g., a, b, c, etc.) for each step are used for convenience of explanation and do not describe the order of the steps; the steps may occur differently from the specified order unless a specific order is clearly indicated in the context. That is, the steps may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.

[0038] The terms used herein are for describing the embodiments and are not intended to limit the invention. In this specification, the singular form includes the plural form unless specifically stated otherwise in the text. As used herein, “comprises” and / or “comprising” do not exclude the presence or addition of one or more other components, steps, actions, and / or elements to the mentioned components, steps, actions, and / or elements.

[0039] Unless otherwise defined, all terms used in this specification (including technical and scientific terms) may be used in a meaning that is commonly understood by those skilled in the art to which the present invention pertains. Additionally, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless explicitly and specifically defined otherwise.

[0040] Furthermore, in describing the embodiments of the present invention, if it is determined that a detailed description of known functions or configurations could unnecessarily obscure the essence of the invention, such detailed description will be omitted. Additionally, the terms described below are defined considering the functions in the embodiments of the present invention, and these may vary depending on the intentions or conventions of the user or operator. Therefore, such definitions should be based on the content throughout this specification.

[0041]

[0042] FIG. 1 is a drawing of an electric vehicle fire prevention system according to a preferred embodiment of the present invention.

[0043] Referring to FIG. 1, the electric vehicle fire prevention system (100) includes a fire extinguishing water supply device (110), a water supply device cover (120), and a control device (130). Preferably, the electric vehicle fire prevention system (100) is intended to prevent fire in a parked electric vehicle, and can prevent fire by measuring the temperature of the lower battery of the parked electric vehicle in real time and spraying fire extinguishing water onto the battery when the temperature exceeds a certain temperature to lower the temperature of the battery.

[0044] The fire extinguishing water supply device (110) receives fire extinguishing water from a fire extinguishing pipe connected to a fire hydrant as a fire extinguishing water pipe and sprays fire extinguishing water onto the lower part of the electric vehicle.

[0045] The water supply device cover (120) is formed in a shape that allows the fire extinguishing water supply device (110) to be placed inside in order to protect the fire extinguishing water supply device (110) from the electric vehicle. Preferably, various sensors are installed on the outside of the water supply device cover (120) so that data can be collected to prevent electric vehicle fires.

[0046] The control device (130) is connected to various sensors installed in the fire extinguishing water supply device (110) and the water supply device cover (120) to check the temperature of the electric vehicle battery in real time and perform or stop fire prevention operations according to the battery temperature. Preferably, the control device (130) may be installed on the wall of the parking space where the fire extinguishing water supply device (110) and the water supply device cover (120) are installed.

[0047]

[0048] FIG. 2 is a drawing of a fire extinguishing water supply device according to one embodiment.

[0049] The fire extinguishing water supply device (110) sprays fire extinguishing water supplied from a fire extinguishing pipe and includes a plurality of central pipes (111), two side pipes (112), nozzles (113 and 114), a fire extinguishing connection pipe (115), and a solenoid valve (116). Preferably, the fire extinguishing water supply device (110) can be directly connected to an existing fire extinguishing pipe to receive fire extinguishing water, and for example, the fire extinguishing pipe can be formed in a T-shape so that the fire extinguishing pipe descends from the existing fire extinguishing pipe to the floor so that the fire extinguishing water supply device (110) receives fire extinguishing water from a fire extinguishing pipe installed on the ceiling of an underground parking lot. In another example, when the fire extinguishing water supply device (110) is installed in each of the multiple parking zones, the fire extinguishing pipe can be formed to extend in a straight line from one end of the existing fire extinguishing pipe down the wall to the floor and pass through the multiple parking zones, and the fire extinguishing water supply device (110) can be connected to the fire extinguishing pipe that is extended according to the location of each parking zone.

[0050] Multiple central pipes (111) may be positioned at locations corresponding to the lower battery portion of the electric vehicle, and radial nozzles (113) may be installed at regular intervals on the upper side of the multiple central pipes (111) to widely spray fire extinguishing water onto the lower battery portion of the electric vehicle to lower the temperature of the battery. Two side pipes (112) may be installed one on each side of the multiple central pipes (111) and positioned away from the lower portion of the electric vehicle, and direct injection nozzles (114) may be installed at regular intervals on the upper side of the two side pipes (112) to spray fire extinguishing water high enough to form a water wall on the roof and sides of the electric vehicle to lower the temperature of the vehicle body. Here, the multiple central pipes (111) and two side pipes (112) may be made of hoses formed of metal or synthetic resin, and the radial nozzles (113) and direct injection nozzles (114) may be installed by screwing or welding, and may be installed so that a nozzle protection member surrounds and protects the outer diameter of each nozzle.

[0051] A fire extinguishing connection pipe (115) is connected to supply fire extinguishing water to multiple central pipes (111) and two side pipes (112), and a solenoid valve (116) is installed so that fire extinguishing water can be supplied from the fire extinguishing pipes to the fire extinguishing connection pipe (115). Preferably, in the fire extinguishing water supply device (110), multiple pipes (111 and 112) can be connected in a fork shape at the fire extinguishing connection pipe (115) connected to the solenoid valve (116). That is, multiple pipes (111 and 112) are all connected to form a fork shape, and a single fire extinguishing connection pipe (115) is connected and a solenoid valve (116) is installed so that the fire extinguishing water supplied from the fire extinguishing pipes is controlled. The solenoid valve (116) can be controlled automatically or manually by installing a switch or valve that connects the fire extinguishing connection pipe (115) and the fire extinguishing pipe and can be opened or closed as needed, and can be installed to open automatically when a fire is detected.

[0052]

[0053] FIGS. 3 and 4 are drawings of a water supply device cover according to one embodiment.

[0054] Referring to FIG. 3, the water supply device cover (120) is configured to allow a plurality of water supply pipes of the fire extinguishing water supply device (110) to be installed inside. Referring to FIG. 3 (a), the water supply device cover (120) includes a central cover (121) covering a plurality of central pipes (111) and two side covers (122) covering two side pipes (112) respectively. Referring to FIG. 3 (b), the water supply device cover (120) is configured to have a space inside so that a fork-shaped fire extinguishing water supply device (110) can be installed in that space. Preferably, the water supply device cover (120) can be installed so as to protrude from the floor or road surface of various parking lots currently installed so that the wheels of an electric vehicle can enter and park, and if necessary, it can be installed in a location dug into the ground so as to be installed at the same height as the floor or road surface.

[0055] Referring to FIG. 4, a temperature sensor (140) and a vehicle guide light (150) may be installed on the water supply device cover (120). The vehicle guide light (150) may be a plurality of LED lights, for example, a waterproof LED line light, and may be installed on the inside of both side covers (122). The temperature sensor (140) may be a non-contact temperature sensor (for example, an infrared temperature sensor) or a thermal imaging camera, and the number of temperature sensors (140) may vary. For example, if a non-contact temperature sensor is used, a plurality of temperature sensors may be installed on the central cover (121) of the water supply device cover (120) so as to be uniformly distributed at a position corresponding to the battery of the electric vehicle, and if a thermal imaging camera is used, two thermal imaging cameras may be installed in a direction toward the battery at positions corresponding to the front and rear wheels of the electric vehicle, respectively.

[0056] Preferably, a detection sensor (160) capable of detecting the presence or absence of a parked electric vehicle may be installed on at least one of the two side covers (122) of the water supply device cover (120). Here, the detection sensor (160) may be a diffuse radiation type photo sensor or an infrared detection sensor as a sensor for detecting objects.

[0057]

[0058] FIGS. 5 and 6 are drawings for explaining a cooling fan according to one embodiment.

[0059] Referring to FIG. 5, the electric vehicle fire prevention system (100) may include at least one cooling fan (170). The cooling fan (170) may operate to generate airflow toward the battery cover to lower the temperature of the battery cover of the electric vehicle. Preferably, a plurality of cooling fans (170) may be included and installed between the central pipes (111), but the number and installation location of the cooling fans (170) can be varied. Additionally, the number and location of the central pipes (111) can also be varied depending on the number and installation location of the cooling fans (170). That is, as shown in FIG. 5, two central pipes (111) may be provided and a plurality of cooling fans (170) may be installed between the two central pipes (111), or if three central pipes (111) are provided, a plurality of cooling fans (170) may be arranged and installed between the first and second central pipes (111) or between the second and third central pipes (111).

[0060] Referring to FIG. 6, the cooling fan (170) is covered by a cooling fan cover (123) as shown in FIG. 6 (a), and is exposed to the outside as shown in FIG. 6 (b) only when a specific condition occurs. Preferably, the cooling fan cover (123) can be installed to correspond to the position of the cooling fan (170) so as to cover each cooling fan (170), and can be opened and closed in a sliding manner using a 24V electric cylinder. More specifically, when a specific condition is met while the cooling fan cover (123) is closed as shown in FIG. 6 (a), the 24V electric cylinder extends and pushes the interconnected cooling fan cover (123), causing the cooling fan cover (123) to open as shown in FIG. 6 (b) and the cooling fan (170) to be exposed to the outside. Here, the cooling fan cover (123) may be equipped with thin wheels to facilitate sliding movement, and various methods may be applied for the cooling fan cover (123) to open and close.

[0061] In one embodiment, the cooling fan (170) is installed inside the central cover (121) so that when the cooling fan cover (123) is closed, no step difference occurs with the central cover (121) and it can be maintained in a flat state. Alternatively, the cooling fan (170) may be installed outside the central cover (121), in which case the cooling fan (170) and the cooling fan cover (123) may protrude from the surface of the central cover (121) to form a step difference.

[0062]

[0063] FIGS. 7 and 8 are drawings of a control device according to one embodiment.

[0064] Referring to FIG. 7, the control device (130) includes a camera (131), a setting button (132), a display screen (133), and control buttons (134 and 135), and can be installed on the wall of a parking lot in the form of a small control box.

[0065] The camera (131) recognizes the license plate of a parked electric vehicle for vehicle recognition. This allows the real-time temperature of the electric vehicle battery to be transmitted to an application related to an electric vehicle fire prevention system installed on the user terminal of the owner of the parked electric vehicle.

[0066] The setting button (132) allows the user to set the dangerous temperature of the electric vehicle battery, select ON / OFF of the vehicle guidance light (140), adjust the brightness of the vehicle guidance light (140), adjust the time interval for turning off the guidance light after detecting the electric vehicle, adjust the operating time of the cooling fan (170), and set data storage and time settings. For example, the user can set the dangerous temperature of the electric vehicle battery to 50 degrees so that a fire prevention operation is performed when the battery temperature reaches 50 degrees, set the vehicle guidance light (140) in a bright space to be turned off, and set the operating time of the cooling fan (170) to 3 minutes or 5 minutes, or set it to be automatically set according to the external temperature.

[0067] The display screen (133) displays the temperature of the temperature sensor (140) installed on the water supply device cover (120) in real time on the screen and corresponds the position of the temperature sensor (140) with the position of the screen so that the temperature rise can be intuitively identified. Preferably, the display screen (133) may be divided and displayed according to the number of temperature sensors (140), and when a temperature sensor (140) is added, a temperature screen displayed on the screen may also be added. For example, when six temperature sensors (140) are installed in a 3x2 row on the central cover (121) of the water supply device cover (120), as shown in FIG. 7, the display screen (133) may be divided into a 3x2 row and the temperature obtained by the temperature sensor (140) corresponding to each position may be displayed.

[0068] The control buttons (134 and 135) include a system OFF button (134) and an emergency button (135). The system OFF button (134) allows the operation of the fire prevention system (100) to be stopped manually when all situations are terminated after the fire prevention operation is performed. The cessation of the fire prevention operation can be performed automatically or manually, and this can be determined by the user's settings. When performed automatically, the operation of the fire prevention system (100) is stopped when the battery temperature drops below a preset temperature, and when performed manually, once the fire prevention operation is performed, the fire prevention operation continues to be performed until the user directly presses the OFF button (134) to stop the operation. The emergency button (135) is pressed manually by the user in an emergency to activate the fire prevention system. Even before the fire prevention operation is performed, in a dangerous situation, for example, when the preset temperature is 50 degrees and the current battery temperature is 49 degrees, the fire prevention operation is not performed because the preset temperature has not been reached. However, if the user determines that the situation is dangerous, they can press the emergency button (135) to activate the fire prevention operation.

[0069]

[0070] Referring to FIG. 8, the control device (130) includes an emergency light management unit (810), a license plate recognition unit (820), a temperature information transmission unit (830), a temperature information output unit (840), a fire prevention operation unit (850), a data storage unit (860), and a control unit (870). Here, the control unit (870) controls the operation and data flow of the emergency light management unit (810), the license plate recognition unit (820), the temperature information transmission unit (830), the temperature information output unit (840), the fire prevention operation unit (850), and the data storage unit (860).

[0071] The guidance light management unit (810) turns off multiple LED vehicle guidance lights (150) when it detects that there is a parked electric vehicle through the detection sensor (160).

[0072] The license plate recognition unit (820) recognizes the license plate of the electric vehicle using the camera (131) when the electric vehicle is parked. This is intended to identify the owner of the electric vehicle and provide an alarm to the owner's user terminal indicating that a battery temperature scan has started.

[0073] The temperature information transmission unit (830) transmits temperature information obtained in real time through the temperature sensor (140) to the vehicle owner's user terminal so that the vehicle owner can check it.

[0074] The temperature information output unit (840) outputs temperature information obtained in real time to the display screen (133) so that the user can visually check the temperature information.

[0075] The fire prevention operation unit (850) automatically operates the cooling fan (170) and, based on temperature information obtained in real time, when a preset temperature is reached, fire extinguishing water is sprayed through the fire extinguishing water supply device (110), and performs fire prevention operations such as providing an alarm to the vehicle owner's user terminal and management office.

[0076] The data storage unit (860) stores data generated during the operation of the control device (130) and data input by the user. Preferably, the data storage unit (860) can store information input by the user via the setting button (132) of the control device (130), and, for example, the dangerous temperature of the electric vehicle battery set by the user, ON / OFF setting information of the vehicle guidance light (140), lighting brightness, or the time interval for turning off the guidance light, or the data storage range or data storage time setting information may be stored.

[0077] The data storage unit (860) can store real-time temperature information of the electric vehicle battery provided through the temperature sensor (140). The control unit (870) can track and manage the status of the electric vehicle battery based on the real-time temperature information stored in the data storage unit (860).

[0078] The description of the electric vehicle fire prevention operation performed through each configuration of the control device (130) is described in more detail below with reference to FIGS. 9 to 13. Each step described with reference to FIG. 9 is described as being performed by different configurations, but is not limited thereto, and depending on the embodiment, at least some of each step may be performed in the same or different configurations.

[0079]

[0080] FIG. 9 is a flowchart illustrating an electric vehicle fire prevention method performed in a control device according to one embodiment, and FIGS. 10 to 13 are illustrative diagrams for explaining the operation of an electric vehicle fire prevention system according to one embodiment.

[0081] First, FIG. 10 (a) shows the fire extinguishing water supply device (110) and the water supply device cover (120) when the electric vehicle is not parked, and the electric vehicle can park by looking at the plurality of vehicle guide lights (150) installed on the inside of the side covers (122) on both sides of the water supply device cover (120). Here, the plurality of vehicle guide lights (150) may be turned on when there is no parked car, and may be kept in a state where they are always off according to the user's setting through the setting button (132) of the control device (130).

[0082] As the electric vehicle is fully parked, the guidance light management unit (810) turns off multiple vehicle guidance lights (150) when it detects that there is a parked electric vehicle through the detection sensor (160) (step S910). At the same time, the power of the electric vehicle fire prevention system (100) is turned on, and the fire prevention operation unit (850) operates the cooling fan (170) for a preset time, and when the operation of the cooling fan (170) is completed, the temperature sensor (140) or thermal imaging camera starts scanning the electric vehicle battery. Since the electric vehicle fire prevention system (100) may malfunction if the temperature sensor (140) or thermal imaging camera starts scanning the electric vehicle battery immediately while the temperature of the electric vehicle battery cover is raised due to the heat of the asphalt, to prevent this, when the electric vehicle is fully parked, the fire prevention operation unit (850) operates the cooling fan (170) before the temperature is scanned to cool the heat of the battery cover and lower the temperature. Here, the operating time of the cooling fan (170) can be set by the user (e.g., 3 to 5 minutes) or automatically set according to the external temperature (e.g., temperature information based on a weather forecast provided by an external server) (e.g., 5 minutes when the temperature information is 30 degrees or 3 minutes when the temperature information is 20 degrees). Preferably, the detection sensor (160) can be installed on the position device cover (120) at a position corresponding to where the front wheel is located when the electric vehicle is parked.

[0083] The license plate recognition unit (820) recognizes the license plate of the electric vehicle (step S920). That is, the license plate recognition unit (820) can identify the vehicle owner's user terminal by recognizing the vehicle number captured through the camera (131) and can provide an alarm for the start of the battery scan to the identified vehicle owner's user terminal.

[0084] The temperature information transmission unit (830) provides real-time temperature information regarding the battery of the electric vehicle parked in the vehicle owner's user terminal (step S930). The temperature information transmission unit (830) transmits the location information of the temperature sensor (140) that acquired the temperature information along with the temperature information, so that the temperature acquired from the temperature sensor (140) can be displayed on the vehicle owner's user terminal at a portion corresponding to the installation location of each temperature sensor (140), just as the display screen output to the control device (130) shown in FIG. 10 (b). That is, the temperature information acquired from the six temperature sensors (140) shown in FIG. 10 (a) can be displayed in the same way at each corresponding location on the vehicle owner's user terminal, as indicated by numbers in the divided screen of FIG. 10 (b).

[0085] The temperature information output unit (840) outputs real-time temperature information of the battery (step S940). Preferably, the temperature information output unit (840) can output real-time temperature information to the display screen (133) of the control device (130) as shown in FIG. 10 (b), and can change the color of the background according to the temperature as shown in FIG. 11 so that danger can be intuitively identified from a distance. For example, referring to FIG. 11 (a), real-time temperature information obtained using six infrared temperature sensors is output, and the temperature information output unit (840) can display temperatures of 40 degrees or higher and less than 50 degrees in orange, and temperatures of 50 degrees or higher in red. In addition, referring to FIG. 11 (b), real-time temperature information obtained using two thermal imaging cameras is output, and the temperature information output unit (840) can display the measured temperature for the entire underside of the vehicle without omission and distinguish it by temperature with different colors so that danger can be identified from a distance. Likewise, color information corresponding to the temperature can be provided along with the temperature information so that the color can be displayed differently according to the temperature to the vehicle owner's user terminal.

[0086] The fire prevention operation unit (850) performs a fire prevention operation when it reaches a preset temperature according to the real-time temperature of the battery (step S950). Preferably, the fire prevention operation unit (850) can provide an emergency alarm to the vehicle owner's user terminal along with the discharge of extinguishing water as a fire prevention operation.

[0087] In one embodiment, the criteria for performing a fire prevention operation may be set as follows: when at least one of the temperature sensors (140) reaches a preset temperature; when the temperature is maintained or rises for a certain period of time after at least one temperature sensor (140) reaches a preset temperature; when at least one temperature sensor (140) reaches a preset temperature and a temperature sensor (140) adjacent to the temperature sensor (140) reaches a preset temperature and it is determined that the range of temperature rise is widening; or when a preset number of temperature sensors (140) reach a preset temperature. For example, when the preset temperature is 50 degrees, a fire prevention action may be set to be performed when three or more of the six temperature sensors reach 50 degrees, when at least one temperature sensor reaches 50 degrees and then remains at or rises above 50 degrees for 5 minutes or more, or when at least one temperature sensor reaches 50 degrees and then the temperature of the adjacent temperature sensor also reaches 50 degrees.

[0088] Preferably, referring to FIG. 12, the fire prevention operation unit (850) can open the solenoid valve (115) so that fire extinguishing water supplied from the fire extinguishing pipe is discharged through the fire extinguishing water supply device (110) when the criteria for performing the fire prevention operation are met (e.g., when at least one temperature sensor reaches 5 degrees). That is, 24V electricity is supplied to the solenoid valve (115) to open the solenoid valve (115). In addition, when the criteria for performing the fire prevention operation are met, the fire prevention operation unit (850) provides an emergency alarm to the vehicle owner's user terminal simultaneously with the discharge of fire extinguishing water, and supplies 24V electricity to the fire hydrant relay to sound a fire signal through the alarm of the fire hydrant transmitter, and simultaneously activates the management office fire receiver (180) connected to the relay so that the fire safety manager (190) can be dispatched to the site. Alternatively, when the criteria for performing a fire prevention operation are met, the fire prevention operation unit (850) immediately sounds a fire signal through the fire hydrant transmitter and simultaneously activates the management office fire receiver (180) connected to the transmitter, so that the fire safety manager (190) can be dispatched to the site. More specifically, referring to FIG. 13, a relay directly connected to the extended common circuit line of the fire hydrant transmitter may be provided inside the control device (130), and the fire hydrant transmitter may be directly connected to the fire receiver (180). Preferably, when the criteria for performing a fire prevention operation are met, the fire prevention operation unit (850) supplies 24V electricity to the relay of the control device (130) to operate the relay so that it acts as a switch, and through the operation of the relay, the alarm of the fire hydrant transmitter is immediately activated to sound a fire signal and simultaneously activate the fire receiver (180).

[0089] In another embodiment, the fire prevention operation unit (850) may set multiple battery temperatures that serve as criteria for danger, so that different fire prevention operations are performed according to the temperatures. Preferably, the fire prevention operation unit (850) may provide an emergency alarm to the vehicle owner's user terminal when at least one temperature sensor (140) reaches a preset first temperature (e.g., 40 degrees), when the temperature is maintained or rises for a certain period of time or longer after at least one temperature sensor (140) reaches the preset first temperature, when at least one temperature sensor (140) reaches the preset first temperature and an adjacent temperature sensor (140) also reaches the preset first temperature, or when a preset number of temperature sensors (140) reach the preset first temperature. That is, in cases where there is no dangerous situation but there is a possibility of it escalating into a dangerous situation (e.g., when the battery temperature rises beyond the normal range), an alarm is provided only to the vehicle owner along with battery temperature information so that the vehicle owner can recognize the situation. Additionally, the fire prevention operation unit (850) checks whether the criteria for performing the fire prevention operation described above are met based on a preset second temperature (e.g., 50 degrees) which is higher than a preset first temperature, and if the criteria for performing the fire prevention operation based on the preset second temperature are met, it can discharge fire extinguishing water, provide an alarm to the vehicle owner's user terminal, sound a fire signal through a fire hydrant relay or fire hydrant generator, and operate the fire receiver (180), and all these operations can be performed simultaneously.

[0090] In another embodiment, the fire prevention operating unit (850) may set multiple battery temperatures that serve as a reference for danger, and allow fire extinguishing water to be discharged through the central pipe (111) or side pipe (112) according to the temperature. First, although not shown in the drawing, the fire extinguishing water supply device (110) may include a first solenoid valve capable of controlling the supply of fire extinguishing water to a plurality of central pipes (111) and a second solenoid valve capable of controlling the supply of fire extinguishing water to both side pipes (112). Preferably, the fire prevention operation unit (850) may open the first solenoid valve to discharge fire extinguishing water into the central pipe (111) when at least one temperature sensor (140) reaches a preset first temperature (e.g., 50 degrees), when the temperature is maintained or rises for a certain period of time or longer after at least one temperature sensor (140) reaches the preset first temperature, when at least one temperature sensor (140) reaches the preset first temperature and an adjacent temperature sensor (140) also reaches the preset first temperature, or when a preset number of temperature sensors (140) reach the preset first temperature. Additionally, the fire prevention operation unit (850) may open the second solenoid valve to discharge fire extinguishing water into the side pipes (112) on both sides when a criterion for performing a fire prevention operation based on a preset second temperature (e.g., 60) which is higher than the preset first temperature is satisfied. That is, when the first temperature is reached, the fire extinguishing water is sprayed widely only on the lower battery portion of the electric vehicle through the radial nozzle (113) of the central pipe (111) to attempt to lower the temperature of the battery in the first instance, and when the temperature of the battery does not decrease even through this and rises to the second temperature, the fire extinguishing water is sprayed from the central pipe (111) and at the same time, the fire extinguishing water is sprayed high through the direct injection nozzle (114) of the two side pipes (112) so that a wall of water is formed on the roof and sides of the electric vehicle, thereby allowing the temperature of the vehicle body to be lowered.In this embodiment as well, the fire prevention operation unit (850) can provide an alarm to the vehicle owner's user terminal in the same way as described above, and can provide an alarm to the management office connected to the fire hydrant relay by causing a fire signal to ring through the fire hydrant relay or fire hydrant transmitter.

[0091] Preferably, the fire prevention operation unit (850) can close the solenoid valve (115) and stop the fire hydrant operation when the temperature of the electric vehicle battery drops below a preset temperature through the fire prevention operation. Even while performing the fire prevention operation, the fire prevention operation unit (850) can check whether the temperature of the battery drops to a preset temperature (e.g., 30 degrees) based on real-time temperature information obtained by the temperature sensor (140). In one embodiment, the criterion for stopping the fire prevention operation may be when the temperature of all temperature sensors (140) drops to a preset temperature, or when the temperature of more than a preset number of temperature sensors (140) drops to a preset temperature and is maintained for a certain period of time or drops further.

[0092]

[0093] FIG. 14 is an illustrative diagram for explaining the operation of a fire breaker according to one embodiment.

[0094] Referring to FIG. 14, the electric vehicle fire prevention system (100) includes a fire blocker (1400), and the fire blocker (1400) includes a lower guide (1410), an upper guide (1420), a lift (1430), and a barrier (1440).

[0095] First, the electric vehicle fire prevention system (100) may include a flame detector. The flame detector is a device for detecting flames occurring in the electric vehicle and may be installed on a central cover (121), a side cover (122), a cooling fan cover (123), or a control device (130), or may be installed in various locations within the parking space of the electric vehicle where flames can be detected.

[0096] Preferably, the fire extinguisher (1400) can prevent the fire extinguishing water supplied through the fire extinguishing water supply device (110) from flowing out and confine it to the parking space of the vehicle where the fire originated when a flame from the electric vehicle is detected through a flame detector. More specifically, the lower guide (1410) of the fire extinguisher (1400) is fixedly installed on the floor to surround the parking space of the electric vehicle, and the upper side (1420) can be formed symmetrically with respect to the lower guide (1410). The lower guide (1410) and the upper guide (1420) are connected via a lift (1430), and the lift (1430) can move the upper guide (1420) in an up-and-down direction. Additionally, a barrier (1440) can be installed on the lower guide (1410) and the upper guide (1420), and the barrier (1440) can be folded and unfolded as the upper side (1420) moves up and down by the operation of the lift (1430). Here, the fire breaker (1400) can be operated in an automatic or manual mode through the fire prevention operating part (850) via a separate operating button. For example, in the manual mode, the user can move the lift (1430) up and down to fold or unfold the barrier (1440).

[0097] In one embodiment, when a flame is detected by a flame detector, the fire prevention operating unit (850) supplies fire extinguishing water through a fire extinguishing water supply device (110) installed in the parking space at the location where the flame was detected, and operates the lift (1430) of the fire shut-off device (1400) so that the upper guide (1420) moves upward and the barrier (1440) unfolds. Through this, the fire extinguishing water is contained inside the barrier (1440), and the vehicle where the fire occurred is submerged, thereby extinguishing the fire.

[0098]

[0099] Meanwhile, the steps of the method or algorithm described in connection with the embodiments of the present invention may be implemented directly in hardware, implemented as a software module executed by hardware, or implemented by a combination thereof. The software module may reside in RAM (Random Access Memory), ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), Flash Memory, a hard disk, a removable disk, a CD-ROM, or any form of computer-readable recording medium well known in the art to which the present invention belongs.

[0100] The components of the present invention may be implemented as a program (or application) and stored on a medium to be executed in combination with a computer, which is hardware. The components of the present invention may be implemented as software programming or software elements, and similarly, embodiments may be implemented in programming or scripting languages ​​such as C, C++, Java, assembler, etc., including various algorithms implemented as combinations of data structures, processes, routines, or other programming configurations. Functional aspects may be implemented as algorithms executed on one or more processors.

[0101]

[0102] Although preferred embodiments of the electric vehicle fire prevention system according to the present invention have been described above, the present invention is not limited thereto and can be implemented with various modifications within the scope of the claims, the detailed description of the invention, and the attached drawings, and such modifications are also included in the present invention.

Claims

1. A fire extinguishing water supply device equipped with multiple water supply pipes to supply fire extinguishing water; A water supply device cover formed to accommodate the plurality of water supply fire extinguishing pipes above; A plurality of temperature sensors installed on the outside of the cover of the above-mentioned water supply device; and A control device that performs a fire prevention operation according to the real-time temperature of the electric vehicle battery obtained from the plurality of temperature sensors, wherein The above control device is, A guide light management unit that turns off a plurality of vehicle guide lights installed on the inside of the two side covers when a parked electric vehicle is detected through a detection sensor installed on at least one of the two side covers covering the two side pipes included in the fire extinguishing water supply device; A license plate recognition unit that recognizes the license plate of the above-mentioned parked electric vehicle; A temperature information transmission unit that provides real-time temperature information regarding the battery of the parked electric vehicle to the vehicle owner's user terminal based on the above-recognized license plate; A temperature information output unit that outputs real-time temperature information of the above-mentioned battery so as to correspond to the installation location of the temperature sensor where the temperature information is obtained; and An electric vehicle fire prevention system comprising a fire prevention operation unit that performs a fire prevention operation when a preset temperature is reached according to the real-time temperature of the battery.

2. In paragraph 1, the fire extinguishing water supply device is, A plurality of central pipes equipped with radial nozzles that spray fire extinguishing water horizontally in the lower battery portion of an electric vehicle; and An electric vehicle fire prevention system characterized by including side pipes on both sides equipped with direct injection nozzles that spray fire extinguishing water vertically to form a water wall on the roof and sides of the electric vehicle.

3. In paragraph 2, the water supply device cover is, A central cover covering the plurality of central pipes above; and An electric vehicle fire prevention system characterized by including side covers that cover each of the above-mentioned side pipes.

4. In Paragraph 1, A cooling fan for lowering the temperature of the cover of the electric vehicle battery; and An electric vehicle fire prevention system characterized by further including a cooling fan cover that opens and closes in a sliding manner so that the cooling fan is exposed to the outside only under specific conditions.

5. In paragraph 4, the control device is, An electric vehicle fire prevention system characterized by opening the cooling fan cover and operating the cooling fan for a preset time when the parking of the electric vehicle is detected through the detection sensor.

6. In paragraph 1, the temperature information output unit is, An electric vehicle fire prevention system characterized by distinguishing and displaying areas corresponding to the installation locations of each of the above-mentioned plurality of temperature sensors in different colors according to the temperature obtained from each of the temperature sensors.

7. In paragraph 1, the fire prevention operating unit is, An electric vehicle fire prevention system characterized by providing an alarm to the vehicle owner's user terminal when the temperature of the battery reaches a preset temperature, and causing a fire signal to sound through a fire hydrant relay or fire hydrant transmitter to provide an alarm to a management office connected to the fire hydrant relay or fire hydrant transmitter.

8. In paragraph 1, the fire prevention operating unit is, An electric vehicle fire prevention system characterized by opening a solenoid valve of a fire extinguishing water supply device so that fire extinguishing water is sprayed through the fire extinguishing water supply device when the temperature of the battery reaches a preset temperature.

9. In paragraph 8, the fire prevention operating unit is, An electric vehicle fire prevention system characterized by locking the solenoid valve and stopping the operation of the fire hydrant when the temperature of the electric vehicle battery falls below a preset temperature.

10. In Paragraph 1, A flame detector installed on the outside of the cover of the above-mentioned water supply device; and It further includes a fire blocker installed to surround the parking space of the electric vehicle, The above fire breaker is, A barrier that traps the fire extinguishing water supplied from the above fire extinguishing water supply device inside; and An electric vehicle fire prevention system characterized by including a lift for moving the barrier so that the barrier is unfolded and folded in the vertical direction.

11. In Clause 10, the above fire prevention operating unit is, An electric vehicle fire prevention system characterized by operating the lift of the fire breaker to deploy the barrier when a flame is detected by the flame detector, thereby trapping the fire extinguishing water supplied to the parking space of the electric vehicle inside the barrier.

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