Vibration and shock battery test chamber to prevent fire spread

Abstract

A battery vibration shock test chamber for preventing fire spread according to one embodiment of the present invention comprises, in a vibration shock test chamber for evaluating and verifying the stability of a battery, a battery chamber portion forming a space for accommodating a battery inside; a sensor portion provided inside the battery chamber portion for detecting whether the battery is overheated or a fire has occurred; a fire water supply portion provided inside the battery chamber portion for selectively supplying fire water when a fire has occurred; a toxic gas discharge portion provided inside the battery chamber portion for circulating internal air to discharge toxic gas and smoke to the outside when a fire has occurred; and a control portion provided on one side of the battery chamber portion for detecting whether a fire has occurred in real time and controlling the on / off operation of an electronic valve of a fire line connected to the sensor portion and the outside.

Description

Technology Field

[0001] The present invention relates to a battery vibration shock test chamber for preventing fire spread, and more specifically, to a battery vibration shock test chamber for preventing fire spread that monitors in real time whether a battery overheats or explodes during a battery safety test, and, when a fire occurs, immediately fills the chamber with fire extinguishing water to completely submerge the battery and suppress the fire. Background Technology

[0002] With the recent rapid increase in advancements in ships, electric vehicles, energy storage batteries, and robots, research on high-performance batteries used in these applications is also becoming increasingly active.

[0003] Among them, lithium-ion batteries are gaining popularity in the market due to their high energy density and the ability to freely charge and discharge, as they do not exhibit the "memory effect"—where recharging before complete discharge causes the battery to "remember" it as fully discharged even if there is remaining charge, thereby reducing capacity and shortening battery life compared to the original charge capacity.

[0004] However, lithium secondary batteries frequently experience fire and explosion accidents due to reasons such as electrolyte leakage, internal overheating, and overcharging, and there is a problem where, if thermal runaway occurs, it spreads to other batteries and cannot be extinguished until the device is completely burned.

[0005] Accordingly, battery safety tests are being conducted to evaluate the performance, lifespan, and design completeness of the battery under conditions more adverse than normal usage environments.

[0006] During the process of conducting the aforementioned battery safety test, if a battery explosion or fire occurred, there was a problem in that it was difficult to suppress the fire in its early stages even by spraying fire extinguishing water, and one had to wait until the battery was completely burned.

[0007] In addition, there were problems such as damage to the chamber used for battery testing and delays in the next test because one had to wait until the battery was completely burned, and damage to material and human resources due to harmful smoke and gases generated during a battery fire.

[0008] Therefore, there is a need for measures to address these problems. As an example, Korean Registered Patent Publication No. 10-2435728 proposes a fire extinguishing method using a fire suppression system for fires occurring inside a battery test chamber, which prevents thermal decomposition of battery components and re-ignition by immediately filling the chamber with extinguishing water and immersing it in the fire when a fire occurs in the battery test specimen.

[0009] However, even in this case, there is a problem where time elapses until extinguishing water is sprayed and the test chamber becomes submerged in the event of a fire, which reduces the durability of the test chamber, and no method is proposed to remove the harmful smoke and gases generated until the battery is submerged.

[0010] Therefore, it is necessary to develop a device that monitors temperature in real time, rapidly supplies fire extinguishing water to the chamber through a fire hose based on temperature detection, and facilitates the easy discharge of toxic fire gases to the outside. Prior art literature

[0011] Korean Registered Patent No. 10-2435728 The problem to be solved

[0012] The objective of the present invention is to provide a battery vibration shock test chamber for preventing fire spread, which monitors a fire in real time within the battery test chamber and, immediately upon the occurrence of a fire in the battery, fills the chamber with fire extinguishing water to immerse the battery in the water, thereby enabling more effective initial fire suppression of the battery.

[0013] In addition, the objective of the present invention is to provide a battery vibration shock test chamber for fire spread prevention that can protect human and material resources by removing smoke and toxic gases that may occur during battery overheating and explosion fires. means of solving the problem

[0014] A battery vibration shock test chamber for preventing fire spread according to one embodiment of the present invention may include a battery chamber portion forming a space for accommodating a battery inside, a sensor portion provided inside the battery chamber portion for detecting whether the battery is overheated or fire has occurred, a fire water supply portion provided inside the battery chamber portion for selectively supplying fire water when a fire occurs, a toxic gas discharge portion provided inside the battery chamber portion for circulating internal air to discharge toxic gases and smoke to the outside when a fire occurs, and a control portion provided on one side of the battery chamber portion for detecting whether a fire has occurred in real time and controlling the on / off operation of an electronic valve of a fire line connected to the sensor portion and the outside.

[0015] Additionally, the sensor unit may include a first sensor that detects smoke by sucking in air inside the battery chamber, a second sensor that detects temperature changes inside the battery chamber and measures heat distribution by acquiring a thermal image, a third sensor that detects infrared wavelengths inside the battery chamber, and a fourth sensor that detects the level of fire extinguishing water inside the battery chamber.

[0016] In addition, the control unit may be characterized by detecting that a fire has occurred when the integrated detection index (F(t)) calculated according to the following [Equation 1] exceeds a preset first threshold value.

[0017] [Mathematical Formula 1]

[0018]

[0019] Here,

[0020] ω1, ω2, ω3, ω4 are weights for the respective sensor data, S(t) is the smoke detection value, θ represents the rate of change in temperature, I(λ, t) represents the infrared wavelength detection value, and ΔP(t) represents the amount of pressure change on the surface of the fire water, respectively.

[0021] In addition, the fire water supply unit may include a plurality of fire extinguishing line units provided at predetermined intervals at the upper end of the battery chamber unit, and a plurality of fire extinguishing nozzle units provided along the longitudinal direction of the fire extinguishing line units to spray fire extinguishing water downward toward the battery chamber unit in the event of a fire.

[0022] In addition, the toxic gas discharge section may include a corrugated pipe section provided on the upper side of the battery chamber section to discharge toxic gases and smoke generated during a fire to the outside, and a ventilation fan provided inside the corrugated pipe section to circulate the internal air of the battery chamber section to guide the toxic gases and smoke to the corrugated pipe section.

[0023] Additionally, the control unit may include a data collection unit that collects data from the sensor unit, a signal processing unit that detects a fire signal by determining the data collected from the data collection unit, and an operation processing unit that, when a fire signal is detected by the signal processing unit, turns on the electronic valve of the fire line to inject fire extinguishing water into the battery chamber unit and operates the ventilation fan to discharge toxic gas and smoke to the outside, and turns off the electronic valve of the fire line to cut off the fire extinguishing water when the fire extinguishing water reaches a preset level inside the battery chamber unit. Effects of the invention

[0024] A vibration shock test chamber for preventing fire spread according to one embodiment of the present invention has the effect of monitoring a fire in real time in a battery test chamber and, immediately upon the occurrence of a fire in the battery, filling the chamber with fire extinguishing water to immerse the battery in the water, thereby enabling more effective initial fire suppression of the battery.

[0025] In addition, it has the effect of protecting human and material resources by removing smoke and toxic gases that may occur during battery overheating and explosion fires. Brief explanation of the drawing

[0026] FIG. 1 is a drawing illustrating the overall shape of a battery vibration shock test chamber for fire spread prevention according to an embodiment of the present invention. FIG. 2 is a drawing for explaining the shape of a fire extinguishing water supply unit of a battery vibration shock test chamber for fire spread prevention according to an embodiment of the present invention. FIG. 3 is a drawing for explaining the shape of a fire extinguishing water supply unit of a battery vibration shock test chamber for fire spread prevention according to another embodiment of the present invention. FIG. 4 is a configuration diagram of a control unit of a battery vibration shock test chamber for fire spread prevention according to an embodiment of the present invention. FIG. 5 is a diagram illustrating a control method for a battery vibration shock test chamber for fire spread prevention according to an embodiment of the present invention. Specific details for implementing the invention

[0027] Specific embodiments of the present invention will be described in detail below with reference to the drawings. However, the concept of the present invention is not limited to the embodiments presented. Those skilled in the art who understand the concept of the present invention may easily propose other inventions that are inferior or other embodiments included within the scope of the concept of the present invention by adding, changing, or deleting other components within the same scope of the concept, and such are also to be considered to be included within the scope of the concept of the present invention.

[0028] Hereinafter, the battery vibration shock test chamber for fire spread prevention according to the present invention will be described in detail with reference to the attached FIGS. 1 to 5.

[0030] FIG. 1 is a drawing illustrating the overall shape of a battery vibration shock test chamber for fire spread prevention according to an embodiment of the present invention.

[0031] Referring to FIG. 1, a battery vibration shock test chamber (100) for preventing fire spread according to one embodiment of the present invention may include a battery chamber section (10), a sensor section (20), a fire water supply section (30), a toxic gas discharge section (40), and a control section (50).

[0032] The battery chamber (10) can form a space for placing and testing batteries inside. The space can generally be constructed of a material capable of withstanding heat and various environmental conditions. The shape of the battery chamber (10) can generally be configured in a rectangular shape. For specific applications, it may be designed in a circular shape centered on the battery, or configured to divide the space into a long tube-shaped chamber to place a series of batteries and test them collectively. The shape of the battery chamber (10) can be modified in various ways to suit specific test purposes and requirements.

[0033] The battery chamber (10) serves to evaluate the safety and performance of the battery internally. It can evaluate the risk of explosion or fire that may occur when the battery overheats or overcharges. The battery chamber (10) can ensure stability by simulating the thermal stability of the battery under various conditions. It can evaluate capacity, efficiency, output, etc. by testing the charging and discharging performance of the battery.

[0034] The sensor unit (20) may be provided inside the battery chamber unit (10). It serves to detect whether overheating and fire may occur in the battery chamber unit (10).

[0035] More specifically, the sensor unit (20) may include a first sensor (21) that detects smoke by sucking in air inside the battery chamber unit (10), a second sensor (22) that detects a temperature change inside the battery chamber unit (10) and measures a heat distribution by acquiring a thermal image, a third sensor (23) that detects infrared wavelengths inside the battery chamber unit (10), and a fourth sensor (24) that detects the fire water level inside the battery chamber unit (10).

[0036] The first sensor (21) above serves to inhale and analyze air to detect smoke. For example, air is inhaled through the air intake pipe inside the battery chamber (10) and passes through the first sensor (21). The first sensor (21) can be selectively configured from a group consisting of optical sensors, ionization sensors, thermal sensors, etc., and the sensors can detect changes occurring when smoke is present and generate a signal. The signal detected by the first sensor (21) can generally be processed through a microprocessor or electronic circuit. The presence and concentration of smoke are accurately measured and analyzed, and if smoke or flames are detected, the first sensor (21) can generate a warning signal to notify an external manager with an alarm sound or warning light.

[0037] The second sensor (22) detects the heat of the battery inside the battery chamber (10) and converts it into an image. For example, the second sensor (22) may use infrared radiation to measure the temperature of the battery. Each pixel generates an electronic signal corresponding to the temperature of the battery, thereby generating an entire image. It can visually display the surface temperature distribution of the battery in real time and quickly detect temperature differences in the battery chamber (10) or heat-generating parts of the battery.

[0038] The third sensor (23) detects infrared wavelengths (e.g., 760 nm to 110 nm), which are heat radiation derived from flames due to combustion reactions during a fire, through an infrared LED and transmits them as analog or digital signals. For example, the third sensor (23) is a sensor that detects and converts light mainly in the infrared region, and can detect infrared radiation emitted by an object to measure the temperature accordingly, and can detect a gas that absorbs infrared radiation of a specific wavelength and measure its concentration.

[0039] The fourth sensor (24) serves to detect and measure the level of firefighting water flowing into the battery chamber (10). By measuring the level and whether firefighting water is being injected into the battery chamber (10) in real time, the amount of firefighting water consumed can be checked and controlled. For example, the fourth sensor (24) may be composed of a non-contact radar sensor. It is composed of a transmitting and receiving antenna that transmits and receives electromagnetic waves, and can detect the distance to an object by emitting electromagnetic waves from the transmitting and receiving antenna and analyzing the waveform and consumption time of the electromagnetic waves reflected after hitting an object.

[0040] As another example, the fourth sensor (24) may measure the water level by detecting the degree of change in pressure (P(t)) occurring on the surface of the fire extinguishing water.

[0041] The pressure change on the surface of the fire extinguishing water is detected using a water pressure sensor ( ...can. That is, since changes in water surface pressure affect water pressure, changes in water level height or waves can be detected through a water pressure sensor, and the rate of change of water pressure ( ) is the pre-set value( If the value is ) or higher, it is determined that the pressure has changed due to the occurrence of a fire( ) can.

[0043] Accordingly, in one embodiment of the present invention, by utilizing data sensed by the first sensor (21) to the fourth sensor (24), an integrated detection index (F(t)) calculated according to the following [Equation 1] can be extracted, and if the integrated detection index exceeds a preset first threshold value, it can be detected that a fire has occurred.

[0044] [Mathematical Formula 1]

[0045]

[0046] Here, ω1, ω2, ω3, and ω4 are weights for the respective sensor data, S(t) is the smoke detection value, θ represents the rate of change in temperature, I(λ, t) represents the infrared wavelength detection value, and ΔP(t) represents the amount of pressure change on the surface of the fire water, respectively.

[0048] Meanwhile, the fire water supply unit (30) may be provided inside the battery chamber unit (10). It serves to selectively supply fire water in the event of a battery explosion fire. More specifically, referring to FIG. 3, the fire water supply unit (30) may include a fire extinguishing line unit (31) and a fire extinguishing nozzle unit (32).

[0049] The above fire extinguishing line section (31) may be provided in multiple numbers at predetermined intervals at the upper end of the battery chamber section (10). The fire extinguishing line section (31) may be composed of highly durable pipes to provide a path for water to extinguish a fire. For example, the fire extinguishing line section (31) may have one pipe installed longitudinally at the upper end of the battery chamber section (10), and two additional pipes installed at equal intervals. By positioning the fire extinguishing line section (31) at the top, rapid suppression and reduced generation of toxic gases can be achieved in the event of a fire.

[0050] In another embodiment, referring to FIG. 4, the fire extinguishing line section (31) may be additionally configured on the side and bottom sections of the battery chamber section (10), respectively. By placing the fire extinguishing line section (31) on the front of the battery chamber section (10), fire extinguishing water can be supplied more quickly in the event of a fire.

[0052] The above-mentioned fire extinguishing nozzle section (32) may be provided in multiple numbers along the longitudinal direction of the fire extinguishing line section (31). The fire extinguishing nozzle section (32) serves to spray fire extinguishing water during fire suppression. In the event of a fire, fire extinguishing water can be sprayed toward the downward direction of the battery chamber section (10). The fire extinguishing nozzle section (32) can provide various spraying patterns. For example, a high-pressure nozzle can form a concentrated stream to directly strike the fire, and a spray nozzle can spray fire extinguishing water over a wide area to suppress the fire. Accordingly, the fire extinguishing nozzle section (32) installed on the upper side of the fire extinguishing line section (31) may be configured as a high-pressure nozzle, and the fire extinguishing nozzle section (32) installed on the side or lower side of the fire extinguishing line section (31) may be configured as a spray nozzle, and can be selectively changed according to various environments. Additionally, the fire extinguishing nozzle section (32) may be configured to control the amount and pressure of the fire extinguishing water.

[0053] The above toxic gas exhaust unit (40) may be provided inside the battery chamber unit (10). In the event of a fire, it serves to circulate internal air to exhaust toxic gases and smoke to the outside. More specifically, the above toxic gas exhaust unit (40) may include a corrugated pipe unit (41) and a ventilation fan (42).

[0054] The corrugated tube section (41) may be provided on the upper side of the battery chamber section (10). The corrugated tube section (41) may be composed of a flexible bellows-shaped tube to minimize structural reaction force during battery vibration and shock tests. The battery chamber section (10) and the corrugated tube section (41) are connected using a rigid L-shaped connecting pipe so that they do not melt even when exposed to flames.

[0055] The ventilation fan (42) may be provided inside the corrugated pipe section (41). The ventilation fan (42) serves to circulate the internal air of the battery chamber section (10) to guide toxic gases and smoke into the corrugated pipe section (41). The ventilation fan (42) may be configured to be linked with the control unit (50) to detect temperature, smoke and gas concentrations and to operate as needed.

[0056] The control unit (50) may be provided on one side of the battery chamber unit (10). The control unit (50) detects whether a fire has occurred in real time and controls the on / off operation of the electronic valve of the external fire line connected to the sensor unit (20) and the fire water supply unit (30).

[0057] More specifically, referring to FIG. 4, the control unit (50) may include a data collection unit (51), a signal processing unit (52), and an operation processing unit (53).

[0058] The data collection unit (51) serves to collect and store various data through the sensor unit (20). Environmental data inside the battery chamber (10) can be measured and collected using various types of sensors of the sensor unit (20). For example, various physical measurements such as optical sensors, ionization sensors, heat ray sensors, temperature sensors, infrared sensors, and thermal imaging sensors can be collected. The collected data can be transmitted and stored in a centralized database or cloud server, and configured to enable real-time monitoring or remote access.

[0059] The signal processing unit (52) determines the data collected from the data collection unit (51), detects a fire signal, and transmits a signal. More specifically, the signal processing unit can process the physical measurement value received from the sensor unit (20) into a digital signal, or perform signal conversion to convert the digital signal back into an analog signal and output it.

[0060] Next, signal filtering can be performed. Signals of a desired frequency band can be extracted from the input signal, or noise can be removed to improve the quality of the signal. This improves the accuracy of the data of the sensor unit (20) and ensures the stability of the signal in the communication system.

[0061] Furthermore, it is possible to generate an output signal of a desired level by amplifying or attenuating the strength of the input signal. This can extend the signal transmission distance or maintain signal quality. It is also possible to derive a desired result by applying specific signal processing algorithms to the input data. For example, algorithms such as data compression, pattern recognition, and signal analysis can be used.

[0062] Accordingly, the signal processing unit (52) can process digital signals through frequency conversion, data decoding, digital filtering, etc. This plays an important role in increasing the accuracy of data transmission in a communication system.

[0063] The above operation processing unit (53) is a module designed to perform a specific operation in response to a given input. When a fire signal is detected from the signal processing unit (52), it plays a role in controlling the operation of each device. More specifically, referring to FIG. 5, when a fire signal is detected based on data collected through each sensor, the electronic valve of the fire line connected outside the battery chamber unit (10) can be turned ON to inject fire extinguishing water into the battery chamber unit (10). Then, the ventilation fan (42) can be operated to guide toxic gas and smoke inside the battery chamber unit (10) to the corrugated pipe unit (41) and discharge them to the outside.

[0064] The above control unit can control the amount and speed of spraying of the fire extinguishing water, and when the fire extinguishing water reaches a preset level inside the battery chamber (10), the electronic valve of the fire extinguishing line can be turned OFF to cut off the fire extinguishing water, and the operation of the ventilation fan (42) can also be turned OFF depending on whether toxic gas and smoke are discharged.

[0066] As described above, although an embodiment of the present invention has been explained by limited embodiments and drawings, the embodiment of the present invention is not limited to the embodiments described above, and various modifications and variations are possible from this description by those skilled in the art to which the present invention pertains. Accordingly, an embodiment of the present invention should be understood only by the claims described below, and all equivalent or analogous variations thereof shall be considered to be within the scope of the inventive concept. Explanation of the symbols

[0068] 100: Battery Vibration & Shock Test Chamber for Fire Spread Prevention 10: Battery chamber 20: Sensor section 21: First sensor 22: Second sensor 23: Third sensor 24: The 4th sensor 30: Firefighting water supply unit 31: Firefighting line unit 32: Fire extinguishing nozzle section 40: Toxic gas discharge section 41: Corrugated pipe section 42: Ventilation fan 50: Control unit 51: Data collection unit 52: Signal processing unit 53: Operation processing unit

Claims

Claim 1 A vibration shock test chamber for evaluating and verifying the stability of a battery comprises: a battery chamber section forming a space for accommodating a battery inside; a sensor section provided inside the battery chamber section and including a first sensor that inhales air inside the battery chamber section to detect smoke, a second sensor that detects temperature changes inside the battery chamber section and acquires a thermal image to measure heat distribution, a third sensor that detects infrared wavelengths inside the battery chamber section, and a fourth sensor that detects the level of fire extinguishing water inside the battery chamber section; a fire extinguishing line section provided inside the battery chamber section and arranged in plurality at predetermined intervals at the upper end of the battery chamber section; a fire extinguishing nozzle section provided in plurality along the length direction of the fire extinguishing line section and spraying fire extinguishing water toward the lower direction of the battery chamber section in the event of a fire; a fire extinguishing water supply section provided inside the battery chamber section and arranged on the upper side of the battery chamber section to discharge toxic gases and smoke generated during a fire to the outside. A toxic gas discharge unit comprising: a ventilation fan provided inside the corrugated pipe section to circulate the internal air of the battery chamber section and guide toxic gases and smoke into the corrugated pipe section; and a control unit provided on one side of the battery chamber section, comprising: a data collection unit that collects data from the sensor section; a signal processing unit that determines the data collected from the data collection unit and detects a fire signal; and, when a fire signal is detected by the signal processing unit, an electronic valve of an external fire line connected to the fire water supply section is turned ON to inject fire extinguishing water into the battery chamber section and the ventilation fan is operated to discharge toxic gases and smoke to the outside, and when the fire extinguishing water reaches a preset water level inside the battery chamber section, the electronic valve of the fire line is turned OFF to cut off the fire extinguishing water, and a control unit that detects that a fire has occurred when the integrated detection index F(t), calculated according to the following [Equation 1], exceeds a preset first threshold value.A battery vibration and shock test chamber for fire spread prevention characterized by including [Equation 1]; (Here, ω1 is a weight for the smoke detection value S(t) obtained from the first sensor, and ω2 is the temperature change rate obtained from the second sensor) It is a weight for, where ω3 is a weight for the infrared wavelength detection value I(λ,t) acquired from the third sensor, ω4 is a weight for the pressure change amount ΔP(t) of the fire water surface acquired from the fourth sensor, and S(t) is a smoke detection value, ε₀ represents the rate of temperature change, I(λ, t) represents the infrared wavelength detection value, and ΔP(t) represents the pressure change amount on the surface of the fire water, respectively. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 delete

Images