Battery pack fire extinguisher for electric vehicle

Abstract

The utility model relates to a battery pack fire extinguisher for an electric vehicle. The battery pack fire extinguisher for an electric vehicle includes: a pack case in the electric vehicle and accommodating a plurality of battery modules; a fire extinguishing tube in the pack case between adjacent battery modules of the plurality of battery modules; a fire extinguishing agent cartridge selectively connected to the fire extinguishing tube and installed in the electric vehicle, and configured to supply a fire extinguishing agent; a fire extinguishing water connector selectively connected to the fire extinguishing tube and configured to supply external fire extinguishing water; and a one-way flow valve for preventing backflow of the fire extinguishing agent or the fire extinguishing water, respectively, when the fire extinguishing agent cartridge or the fire extinguishing water connector is selectively connected to the fire extinguishing tube.

Description

TECHNICAL FIELD

[0001] Aspects of embodiments of the present disclosure relate to a battery pack fire extinguisher for an electric vehicle and a fire extinguishing method thereof. BACKGROUND

[0002] Electric vehicles that are currently being sold and operated are suffering from fire due to an accident or a battery failure. In order to extinguish the fire, a method of installing a barrier around the fire vehicle and then filling the barrier with water to cool the battery and extinguish the fire is used.

[0003] However, with this method, early fire extinguishing response is difficult until the arrival of a fire truck, and a lot of time and a lot of water are required for battery fire extinguishing. In addition, since the fire extinguishing water is sprayed from the outside of the electric vehicle, the fire extinguishing efficiency is also low. SUMMARY

[0004] Embodiments of the present disclosure provide a battery pack fire extinguisher for an electric vehicle that suppresses a fire of a battery pack by spraying a fire extinguishing agent contained in a fire extinguishing agent cartridge provided in the electric vehicle when an event (e.g., a thermal event) occurs. In addition, embodiments of the present disclosure provide a battery pack fire extinguisher for an electric vehicle that suppresses a fire of a battery pack by extinguishing and cooling with a fire extinguishing agent once and then additionally cooling and extinguishing with external fire extinguishing water.

[0005] Embodiments of the present disclosure provide a battery pack fire extinguishing method for an electric vehicle that suppresses a fire of a battery pack by spraying a fire extinguishing agent provided in the electric vehicle when an event occurs. In addition, embodiments of the present disclosure provide a battery pack fire extinguishing method for an electric vehicle that suppresses a fire of a battery pack by first cooling and extinguishing with a fire extinguishing agent and then secondarily cooling with external fire extinguishing water.

[0006] According to an embodiment of the present disclosure, a battery pack fire extinguisher for an electric vehicle includes a pack case that is in the electric vehicle and accommodates a plurality of battery modules; a fire extinguishing pipe that is in the pack case between adjacent battery modules of the plurality of battery modules; a fire extinguishing agent cartridge that is selectively connected to the fire extinguishing pipe and installed in the electric vehicle and configured to supply a fire extinguishing agent; a fire extinguishing water connector that is selectively connected to the fire extinguishing pipe and configured to supply external fire extinguishing water; and a one-way flow valve that selectively connects the fire extinguishing agent cartridge or the fire extinguishing water connector to the fire extinguishing pipe to prevent backflow of the fire extinguishing agent or the fire extinguishing water, respectively.

[0007] The pack case can include a rupture disc configured to open when an internal pressure in the pack case increases.

[0008] The group case can include a temperature sensor configured to detect a temperature rise in the group case and transmit a corresponding detection signal to a controller.

[0009] The group case can include a pressure reduction valve configured to open when an internal pressure in the group case rises.

[0010] The fire extinguishing agent cylinder can include a solenoid valve at an outlet of the fire extinguishing agent cylinder connected to the fire extinguishing pipe, the solenoid valve being controlled by the controller to supply and block the fire extinguishing agent to the fire extinguishing pipe.

[0011] The fire extinguishing agent cylinder can have an orifice at an outlet of the solenoid valve, the orifice being configured to control a jet pressure of the fire extinguishing agent into the fire extinguishing pipe.

[0012] The fire extinguishing water connector can be a one-touch coupler.

[0013] The installation position of the fire extinguishing pipe can be higher than 1 / 3 of the height of the group case.

[0014] The fire extinguishing pipe can have an opening corresponding to each of the plurality of battery modules and an opening member configured to open the opening in response to a temperature rise of a corresponding battery module.

[0015] According to an embodiment, a battery group fire extinguishing method for an electric vehicle includes opening an opening in a fire extinguishing pipe when a temperature in a group case housing battery modules rises due to thermal deformation of the fire extinguishing pipe and a fire, comparing a temperature rise value according to an input signal of a temperature sensor in the group case with a reference value stored in a controller to determine whether the temperature rise value is higher than the reference value, supplying a fire extinguishing agent to the fire extinguishing pipe to be jetted on the battery modules if the temperature rise value is higher than the reference value to perform one cooling and extinguishing of the battery modules with the fire extinguishing agent, and supplying external fire extinguishing water to the fire extinguishing pipe to perform secondary cooling and extinguishing of the battery modules with fire extinguishing water after the fire extinguishing agent is consumed.

[0016] The opening of the opening in the fire extinguishing pipe can include opening a solenoid valve of a fire extinguishing agent cylinder by the controller, jetting the fire extinguishing agent stored in the fire extinguishing agent cylinder through the opening of the fire extinguishing pipe, one cooling and extinguishing of a fired battery module with the fire extinguishing agent, filling the interior of the group case with the fire extinguishing agent, and continuously cooling the fired battery module until the fire extinguishing agent is consumed.

[0017] The supply of the external fire extinguishing water can include connecting the fire extinguishing pipe to an external fire extinguishing water pipe after the primary cooling and extinguishing, and continuously cooling the ignited battery module by spraying the fire extinguishing water inside the pack case.

[0018] Since the battery pack fire extinguisher is equipped with a fire extinguishing agent cylinder containing a fire extinguishing agent in an electric vehicle, and when an event occurs, the fire extinguishing agent is directly and concentratedly sprayed on the ignited battery module to extinguish it, thereby suppressing the ignition of the battery pack at an early stage.

[0019] According to an embodiment, when an event occurs, the ignition of the battery pack is suppressed by spraying the fire extinguishing agent stored in the electric vehicle, and then the external fire extinguishing water is connected through the fire extinguishing water connector to supply sufficient fire extinguishing water to the ignited battery module to extinguish and cool it twice, thereby further suppressing the ignition of the battery pack. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic view of a battery pack fire extinguisher for an electric vehicle according to an embodiment.

[0021] Figure 2 is Figure 1 is a perspective view of the battery pack fire extinguisher shown in

[0022] Figure 3 is a sectional view taken along line III-III in Figure 2

[0023] Figure 4 is a flowchart describing a battery pack fire extinguishing method for an electric vehicle according to an embodiment.

[0024] Figure 5 is a flowchart describing a third step of the method described in Figure 4

[0025] Figure 6 is a flowchart describing a fourth step of the method described in Figure 4

[0026] REFERENCE NUMERALS

[0027] 10: battery module 20: pack case

[0028] 21: rupture disc 22: temperature sensor

[0029] 23: pressure reducing valve 30: fire extinguishing pipe

[0030] 31: opening 32: opening member

[0031] 40: fire extinguishing agent cylinder 41: solenoid valve

[0032] ​​​42: orifice 50: fire suppression water connector

[0033] 60: one-way flow valve 70: electric vehicle

[0034] 80: controller DETAILED DESCRIPTION

[0035] Hereinafter, the present disclosure will be described more fully with reference to the accompanying drawings, in which embodiments of the present disclosure are shown. As this skilled person will appreciate, the described embodiments can be modified in various different ways, all without departing from the scope of the present disclosure. The drawings and the description are to be read in conjunction with each other in an illustrative, rather than a restrictive, sense.

[0036] It will be understood that when an element or layer is referred to as being “on” another element or layer, “connected to” or “coupled to” another element or layer, it can be directly on, connected or coupled to the other element or layer, or one or more intervening elements or layers can also be present. When an element or layer is referred to as being “directly on” another element or layer, “directly connected to” or “directly coupled to” another element or layer, no intervening element or layer is present. For example, when a first element is described as being “coupled” or “connected” to a second element, the first element can be directly coupled or connected to the second element, or the first element can be indirectly coupled or connected to the second element via one or more intervening elements.

[0037] In the drawings, the size of various elements, layers, etc. can be exaggerated for clarity. Like reference numbers signify like elements. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items. In addition, use of “may” in the description of a disclosed embodiment relates to “one or more disclosed embodiments of the disclosure.” Expressions such as “at least one of,” and “one or more of,” when preceding a list of two or more items, cover the entire list of items and do not mean each individual item. For example, the expression “at least one of a, b, and c” indicates only a, only b, only c, both a and b, both a and c, both b and c, all of a, b, and c, or a variation thereof. As used herein, the term “use” can be considered synonymous with the term “utilize.” As used herein, the terms “substantially,” “about,” and similar terms are used as approximating terms and not as degree terms, and are intended to account for variations in measurement values or calculated values that would be recognized by one of ordinary skill in the art.

[0038] It will be understood that, although the terms“first,”“second,”“third,” etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms are used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus,“a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of example embodiments.

[0039] Spatially relative terms such as“beneath,”“below,”“lower,”“above,”“upper” and the like can be used herein for ease of description to describe one element or feature’s relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device is inverted in the figures, elements described as“below” or“beneath” other elements or features would then be oriented“above” or“over” the other elements or features. Thus, the term“below” can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0040] The terminology used herein is for the purpose of describing embodiments of the present disclosure and is not intended to be limiting of the present disclosure. As used herein, singular forms are intended to include the plural forms unless the context clearly indicates otherwise. It will be further understood that the terms“comprises” and / or“comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0041] In view of the entire disclosure, those of ordinary skill in the art will appreciate that each suitable feature of various embodiments of the present disclosure can be combined, in part or whole, with each other, and can be technically interlocked and operated in various suitable ways, and each embodiment can be implemented independently of each other or in combination with each other in any suitable way, unless otherwise stated or implied.

[0042] The controller and / or any other related devices or components according to embodiments of the disclosure described herein can be implemented using any suitable hardware, firmware (e.g., dedicated integrated circuits), software, and / or suitable combinations of software, firmware, and hardware. For example, various components of the controller can be formed on one integrated circuit (IC) chip or on separate IC chips. Further, various components of the controller can be implemented on a flexible printed circuit film, a tape carrier package (TCP), a printed circuit board (PCB), or formed on the same substrate as a substrate of the controller. Further, various components of the controller can be processes or threads running on one or more processors in one or more computing devices that execute computer program instructions and interact with other system components to perform various functions described herein. The computer program instructions are stored in memory that can be implemented using standard memory devices such as random access memory (RAM). The computer program instructions can also be stored in other non-transitory computer readable media such as CD-ROMs, flash drives, etc. Moreover, those skilled in the art will appreciate that the functions of various computing devices can be combined or integrated into a single computing device, or functions of a particular computing device can be distributed across one or more other computing devices, without departing from the scope of the example embodiments of the present disclosure.

[0043] Figure 1 is a schematic diagram of a battery pack fire extinguisher for an electric vehicle according to an embodiment. Referring to Figure 1 A battery pack fire extinguisher (also referred to as a “battery pack fire suppressor”) for an electric vehicle includes a battery module 10 including a plurality of built-in battery cells, a pack housing 20, a fire extinguishing tube 30, a fire extinguishing agent cylinder 40, a fire extinguishing water connector 50, and a one-way flow valve (e.g., a check valve) 60. The battery pack fire extinguisher is installed in an electric vehicle 70.

[0044] A plurality of battery modules 10 are provided to enable the electric vehicle 70 to generate sufficient output (e.g., to adequately power the electric vehicle 70), each battery module including rechargeable batteries connected together in series and in parallel. The pack housing 20 can be formed by a body of the electric vehicle 70 or can be manufactured separately from the body and assembled into the body. The pack housing 20 can house the plurality of battery modules 10.

[0045] The pack housing 20 can be equipped with (e.g., can include on a side) a rupture disc 21. In the event of a fire in the battery module 10, internal pressure of the pack housing 20 can increase. In response to the increased internal pressure, the rupture disc 21 opens (e.g., bursts) and releases the internal pressure of the pack housing 20, thereby preventing an explosion of the battery cells or the battery module 10.

[0046] The module case 20 can be equipped with (e.g., can include on one side) a temperature sensor 22. The temperature sensor 22 detects a temperature increase due to a battery fire within the battery module 10 and transmits a detection signal to the controller 80.

[0047] The module case 20 can be equipped with (e.g., can include on one side) a pressure reduction valve 23. The pressure reduction valve 23 opens (e.g., bursts) when the internal pressure of the module case 20 increases, to prevent an explosion of the battery cell or the battery module 10.

[0048] The pressure reduction valve 23 opens in response to an internal pressure that is lower than the opening pressure of the rupture disc 21. By opening the pressure reduction valve 23, the internal pressure of the module case 20 can reach an appropriate level. However, if the pressure continues to rise even after the pressure reduction valve 23 opens and reaches the opening pressure of the rupture disc 21, the rupture disc 21 also opens.

[0049] Figure 2 is Figure 1 A perspective view of the battery pack fire extinguisher shown in Figure 3 is a cross-sectional view taken along line III-III in Figure 2 Reference is made to Figure 2 and Figure 3 The fire extinguishing tube 30 is installed within the module case 20 between the battery modules 10. The fire extinguishing tube 30 is configured to supply a fire extinguishing agent or fire extinguishing water to a battery module 10 that is on fire.

[0050] A single fire extinguishing tube 30 is exemplified in the present embodiment, but when the number of battery modules 10 increases, a fire extinguishing tube can be placed between each of the battery modules 10 (e.g., between each two adjacent battery modules 10) to supply a fire extinguishing agent and fire extinguishing water between each of the battery modules 10.

[0051] The fire extinguishing agent cartridge 40 and the fire extinguishing water connector 50 are selectively connected to the fire extinguishing tube 30 by the one-way flow valve 60, such that the fire extinguishing agent cartridge 40 can supply (e.g., can selectively supply) a fire extinguishing agent, and the fire extinguishing water connector 50 can supply external fire extinguishing water.

[0052] The fire extinguishing agent cartridge 40 is installed on (or in) the electric vehicle 70 and is connected to the fire extinguishing tube 30 by the one-way flow valve 60. The fire extinguishing water connector 50 is installed on (or in) the electric vehicle 70 and is connected to the fire extinguishing tube 30 by the one-way flow valve 60.

[0053] The one-way flow valve 60 selectively connects the fire extinguishing tube 30 to the fire extinguishing agent cartridge 40 or the fire extinguishing water connector 50. When a fire extinguishing agent or fire extinguishing water is supplied to the fire extinguishing tube 30, the one-way flow valve 60 prevents the fire extinguishing agent from flowing back to the fire extinguishing water connector 50 and the fire extinguishing water from flowing back to the fire extinguishing agent cartridge 40, respectively.

[0054] The fire extinguishing agent cylinder 40 is equipped with (e.g., includes) a solenoid valve 41 at an outlet connected to the fire extinguishing pipe 30. The solenoid valve 41 is controlled by the controller 80 to control the supply and blockage of the fire extinguishing agent from the fire extinguishing agent cylinder 40 to the fire extinguishing pipe 30 through the one-way flow valve 60.

[0055] The fire extinguishing agent cylinder 40 has an orifice 42 at the outlet of the solenoid valve 41. The orifice 42 controls the injection (or outlet) pressure of the fire extinguishing agent supplied from the solenoid valve 41 to the fire extinguishing pipe 30 through the one-way flow valve 60.

[0056] As an example, the fire extinguishing water connector 50 can be a one-touch coupler or a quick connector. The fire extinguishing water connector 50 is configured to quickly supply fire extinguishing water due to the fire of the battery module 10.

[0057] To this end, the fire extinguishing water connector 50 can be provided around the charging port of the electric vehicle 70, and in a hybrid vehicle, it can be provided around the fuel inlet.

[0058] The installation position H1 of the fire extinguishing pipe 30 can be a position higher than 1 / 3 of the height H of the pack case 20 (H1≥H / 3). When the battery module 10 is on fire, i.e., when the fire initially occurs, the fire extinguishing pipe 30 is opened, injects the fire extinguishing agent, and the fire extinguishing agent is filled inside the pack case 20. The installation position H1 of the fire extinguishing pipe 30 can be set in consideration of the capacity of the fire extinguishing agent cylinder 40.

[0059] As an example, when the installation position H1 of the fire extinguishing pipe 30 is higher than 1 / 3 of the height of the battery cell, the fire extinguishing agent can be filled to more than 1 / 3 of the height of the battery cell. Thus, the primary cooling and extinguishing of the battery cell on fire can be more effective. For convenience, the height of the battery cell can be referred to as the height of the battery module 10, which is lower than the height H of the pack case 20.

[0060] In some embodiments, the fire extinguishing pipe 30 is located at a height of about 50 mm or more from the bottom of the pack case 20, in consideration of the diameter of the fire extinguishing pipe 30. The solenoid valve 41 and the orifice 42 can be filled at a speed, in consideration of the capacity of the fire extinguishing agent cylinder 40, the capacity of the pack case 20, and the primary cooling and extinguishing of the battery module 10 or battery cell on fire. As an example, the solenoid valve 41 and the orifice 42 can be filled at a speed of about 1 LPM (liter per minute) or more.

[0061] The fire extinguishing pipe 30 has openings 31 corresponding to each of the battery modules 10 and an opening member 32 configured to open the corresponding ones of the openings 31 in response to the elevated temperature of the battery module 10 on fire.

[0062] For example, the opening member 32 opens the opening 31 closest to the fire based on the ignition temperature of the battery module 10, allowing the extinguishing agent supplied to the extinguishing pipe 30 to be accumulated and supplied to the ignited battery module 10. The battery module 10 is cooled and extinguished once by the supplied extinguishing agent.

[0063] Figure 4 is a flowchart describing a battery pack extinguishing method for an electric vehicle according to an embodiment. Figure 5 is a flowchart describing Figure 4 is a flowchart describing the third step of the method described in Figure 6 is a flowchart describing Figure 4 is a flowchart describing the fourth step of the method described in

[0064] Referring to Figures 4 to 6 , the battery pack extinguishing method for an electric vehicle (also referred to as "battery pack extinguishing method") includes a first step ST1, a second step ST2, a third step ST3, and a fourth step ST4. In the first step ST1, thermal deformation and ignition of the extinguishing pipe 30 in the pack case 20 including the battery module 10 occur when the temperature rises, and the opening 31 of the extinguishing pipe 30 is opened.

[0065] When the temperature inside the pack case 20 rises due to the ignition of the battery module 10 in the first step ST1, the opening member 32 blocking the opening 31 of the extinguishing pipe 30 is thermally deformed (e.g., melted) and opens the opening 31. The opening member 32 can be formed of a resin material capable of opening the opening 31 by thermal deformation.

[0066] In the second step ST2, the temperature sensor 22 provided in the pack case 20 detects the temperature rise due to the ignition of the battery module 10 and inputs a detection signal to the controller 80. The controller 80 compares the temperature rise value according to the input signal with a reference value (e.g., a predetermined value) of the controller 80 and determines whether the temperature rise value is higher than the reference value.

[0067] In the third step ST3, when the temperature rise value detected by the temperature sensor 22 is greater than the reference value, the extinguishing agent is supplied to the extinguishing pipe 30 to be sprayed on the battery module 10. Accordingly, the third step ST3 cools and extinguishes the battery module 10 once with the extinguishing agent.

[0068] Referring to Figure 5 , the third step ST3 includes a third / first step ST31, a third / second step ST32, a third / third step ST33, a third / fourth step ST34, and a third / fifth step ST35. In the third / first step ST31, the electromagnetic valve 41 of the extinguishing agent cartridge 40 is opened by the controller 80.

[0069] The controller 80 compares the temperature rise value according to the input signal of the temperature sensor 22 with a reference value of the controller 80, and opens the electromagnetic valve 41 if it is determined that the temperature rise value is higher than the reference value.

[0070] In the third / second step ST32, the fire extinguishing agent stored in the fire extinguishing agent cylinder 40 is supplied to the fire extinguishing pipe 30 through the electromagnetic valve 41 and the one-way flow valve 60 and is sprayed through the opening 31 of the fire extinguishing pipe 30 due to the opening of the electromagnetic valve 41. Because the opening 31 is open, the fire extinguishing agent is concentratedly sprayed onto the ignited battery module 10 adjacent to the opening 31 through the opening 31.

[0071] In the third / third step ST33, the fire extinguishing agent is concentratedly sprayed on the ignited battery module 10, thereby performing primary cooling and extinguishing of the battery module 10. The ignition and flame of the battery module 10 can be completely extinguished by the fire extinguishing agent in the early stage of ignition.

[0072] In the third / fourth step ST34, the inside of the pack case 20 is filled with the fire extinguishing agent. The fire extinguishing agent cylinder 40 sprays the fire extinguishing agent into the inside of the pack case 20 until the stored fire extinguishing agent is consumed. In the third / fifth step ST35, the ignited battery module 10 and the built-in battery cell are continuously cooled until the fire extinguishing agent is consumed.

[0073] As an example, the fire extinguishing agent can be dodecafluoro-2-methylpentan-3-one sold as Novac 1230 by 3M Corporation. After the fire extinguishing agent spraying is completed, the fire extinguishing agent remaining in the pack case 20 cools the inside of the pack case 20 by continuous vaporization (for example, by undergoing a phase change).

[0074] For this reason, in the present embodiment, the fire extinguishing agent cylinder 40 having the built-in fire extinguishing agent is installed on the electric vehicle 70, so that when an event occurs, the fire extinguishing agent can be concentratedly sprayed on the ignited battery module 10 to perform primary cooling and extinguishing, thereby suppressing the ignition of the battery pack in the early stage.

[0075] In the fourth step ST4, after the fire extinguishing agent is consumed, external fire extinguishing water is supplied to the fire extinguishing pipe 30 through the fire extinguishing water connector 50 and the one-way flow valve 60 to perform secondary cooling and extinguishing of the ignited battery module 10 with the fire extinguishing water. For example, the ignited battery module 10 is extinguished by primary cooling with the fire extinguishing agent, and then the ignited battery module 10 is extinguished by secondary cooling with the fire extinguishing water.

[0076] Reference Figure 6The fourth step ST4 includes a fourth / first step ST41 of connecting the fire extinguishing pipe 30 to an external fire extinguishing water pipe after one cooling and extinguishing, and a fourth / second step ST42 of spraying fire extinguishing water to the inside of the battery module group case 20 to continuously cool the ignited battery module group 10.

[0077] As described above, when an event (e.g., a thermal event) occurs, the fire extinguishing agent provided in (or stored in) the electric vehicle is sprayed to suppress the ignition of the battery group at an early stage, and then the external fire extinguishing water is connected and supplied through the fire extinguishing water connector to extinguish and cool the battery group twice, thereby further suppressing the ignition (or re-ignition) of the battery group.

[0078] While the disclosure has been described in connection with what is presently considered to be the practical embodiment, it is to be understood that the disclosure is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the scope of the appended claims and their equivalents.

Claims

1. A battery pack fire extinguisher for an electric vehicle, characterized by, The battery pack fire extinguisher includes: a pack housing, in the electric vehicle and housing a plurality of battery modules; a fire extinguishing pipe, in the pack housing between adjacent ones of the plurality of battery modules; a fire extinguishing agent cartridge, selectively connected to the fire extinguishing pipe and installed in the electric vehicle, and configured to supply a fire extinguishing agent; a fire extinguishing water connector, selectively connected to the fire extinguishing pipe and configured to supply external fire extinguishing water; and a one-way flow valve, selectively connecting the fire extinguishing agent cartridge or the fire extinguishing water connector to the fire extinguishing pipe to prevent backflow of the fire extinguishing agent or fire extinguishing water, respectively.

2. The battery pack fire suppressor of claim 1, wherein, The pack housing includes a rupture disc configured to open upon an increase in internal pressure inside the pack housing.

3. The battery pack fire suppressor of claim 1, wherein, The pack housing includes a pressure relief valve configured to open upon an increase in internal pressure inside the pack housing.

4. The battery pack fire suppressor of claim 1, wherein, The pack housing includes a temperature sensor configured to detect a temperature rise within the battery modules and send a corresponding detection signal to a controller.

5. The battery pack fire suppressor of claim 4, wherein, The fire extinguishing agent cartridge includes a solenoid valve at an outlet of the fire extinguishing agent cartridge connected to the fire extinguishing pipe, the solenoid valve controlled by the controller and configured to supply and block the fire extinguishing agent to the fire extinguishing pipe.

6. The battery pack fire suppressor of claim 5, wherein, The fire extinguishing agent cartridge has an orifice at the outlet of the solenoid valve, the orifice configured to control an injection pressure of the fire extinguishing agent into the fire extinguishing pipe.

7. The battery pack fire suppressor of claim 1, wherein, The fire extinguishing water connector is a one-touch coupler.

8. The battery pack fire suppressor of claim 1, wherein, The fire extinguishing pipe is installed at a position higher than 1 / 3 of a height of the pack housing.

9. The battery pack fire suppressor of claim 1, wherein, The fire extinguishing pipe has a plurality of openings corresponding to each of the plurality of battery modules and an opening member configured to open one or more of the plurality of openings in response to a raised temperature of a corresponding one or more of the plurality of battery modules.

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