Battery pack and device including the same

Abstract

A battery pack according to an embodiment of the present application includes a plurality of battery modules, an exhaust air inducing frame disposed along edges of the plurality of battery modules and forming an exhaust air passage, and an exhaust door connecting the exhaust air inducing frame to an inside of the plurality of battery modules, wherein a fire extinguishing member is formed on a passage of the exhaust door.

Description

TECHNICAL FIELD

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2020-0052257, filed on April 29, 2020, in the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference.

[0003] The present application relates to a battery pack and an apparatus including the same, and more particularly, to a battery pack improved in safety and an apparatus including the same. BACKGROUND

[0004] Rechargeable batteries having high application characteristics as well as electrical characteristics such as high energy density are widely used in battery vehicles, hybrid vehicles, and power storage apparatuses and portable apparatuses driven by an electric driving source according to their products. These rechargeable batteries are attracting attention as a new energy source for improving environmental friendliness and energy efficiency, since they do not generate any byproducts of energy use, and their main advantage is that the use of fossil fuels can be greatly reduced.

[0005] Among commercially available secondary batteries, there are nickel-cadmium batteries, nickel-hydrogen batteries, nickel-zinc batteries, and lithium secondary batteries, in which the lithium secondary batteries have almost no memory effect compared to nickel-based secondary batteries, and thus have the advantages of free charging and discharging, very low self-discharge rate, and high energy density.

[0006] Lithium secondary batteries generally use lithium-based oxides and carbon materials as positive and negative active materials, respectively. The lithium secondary battery includes an electrode assembly in which positive and negative electrode plates to which positive and negative active materials are respectively applied are disposed, and a separator is disposed between the positive and negative electrode plates, and an external material, i.e., a battery case, for sealing and receiving the electrode assembly together with an electrolyte solution.

[0007] In general, depending on the shape of the external material, the lithium secondary battery can be classified into a cylindrical or prismatic secondary battery in which the electrode assembly is installed in a metal can, and a pouch-type secondary battery in which the electrode assembly is installed in a pouch of an aluminum laminate sheet.

[0008] In recent years, in addition to being used as an energy storage source for secondary batteries, as the demand for large-capacity secondary battery structures increases, the demand for battery packs in which a plurality of battery modules in which a plurality of secondary batteries are coupled in series or in parallel are gathered is increasing. By coupling a plurality of battery cells in series or in parallel and constituting a battery cell stack, the capacity and output of the battery module are improved. In addition, a plurality of battery modules can constitute a battery pack when installed with various control and protection systems such as a battery management system (BMS) or a cooling system.

[0009] The battery pack has a structure in which a plurality of battery modules are combined, and thus there can be problems in the safety and work efficiency of the battery pack when some battery modules receive an overvoltage or an overcurrent or some battery modules are overheated. In particular, as the capacity of the battery pack increases with an increase in the cruising range and a corresponding increase in the energy inside the battery pack, there is a need to design a structure that satisfies a strengthened safety standard and obtains the safety of the vehicle and the driver. To this end, there is a growing need to obtain a structure that prevents internal thermal runaway in advance and minimizes the corresponding damage when thermal runaway occurs. SUMMARY

[0010] The present application is directed to providing a battery pack in which safety is improved and an apparatus including the same.

[0011] However, the objectives of the present application are not limited to the above-described objectives, and can be variously extended within the spirit and scope of the present application.

[0012] An embodiment of the present application provides a battery pack including a plurality of battery modules, an exhaust gas induction frame disposed along edges of the battery modules and forming an exhaust gas passage, and an exhaust door for connecting an inside of the battery module and the exhaust gas induction frame, in which a fire extinguishing member is formed on a passage of the exhaust door.

[0013] The fire extinguishing member can be made of a fire extinguishing net.

[0014] The exhaust gas induction frame can include a pair of vertical beams formed to be parallel to a first direction, and a pair of horizontal beams formed to be parallel to a second direction transverse to the first direction, and the vertical beams and the horizontal beams respectively have a pipe shape, and can include a cover formed in a length direction of the vertical beams and the horizontal beams, and a passage surrounded by the cover and formed to allow gas to pass through.

[0015] The battery pack can further include at least one rupture portion on an outer side of one of the horizontal beam and the vertical beam, the at least one rupture portion being connected to the passage.

[0016] The passage of the exhaust door and the passage of the rupture portion can be formed to cross each other.

[0017] The cover of the horizontal beam can include at least one first connection hole facing the battery module, and the exhaust door can be formed such that a tube shape of the exhaust door can communicate with a tube shape of the horizontal beam facing the first connection hole.

[0018] On a portion where the vertical beam crosses the horizontal beam, a second connection hole can be installed on a cover of one of the vertical beam and the horizontal beam, the second connection hole communicating with a passage of the other of the vertical beam and the horizontal beam.

[0019] The battery pack can further include a battery pack case for receiving the battery module and the exhaust inducing frame, wherein the battery pack case can include an upper cover and a lower case, and a battery pack gasket can be formed between the upper cover and the lower case.

[0020] The battery module can include an end plate for covering a battery cell stack exposed on front and rear sides of a module frame, an opening can be formed in a portion of the end plate, and an exhaust door can be connected to the opening of the end plate.

[0021] A door gasket can be formed between the exhaust door and the end plate.

[0022] Another embodiment of the present invention provides an apparatus including the above-described battery pack.

[0023] According to an embodiment, the exhaust inducing structure is provided in the battery pack, so that when an abnormal phenomenon is generated in the battery cell, safety of the battery pack can be ensured by inducing exhaust in a predetermined direction. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A battery module according to an embodiment of the present invention is illustrated.

[0025] Figure 2 A perspective view of the battery module is illustrated as viewed from below to above along a z-axis direction. Figure 1 A perspective view of the battery module is illustrated.

[0026] Figure 3 An exploded perspective view of a battery pack according to an embodiment of the present invention is illustrated.

[0027] Figure 4 An exploded perspective view of a battery pack according to an embodiment of the present invention is illustrated.Figure 3 An exploded perspective view of the exhaust gas inducing frame in the battery pack.

[0028] Figure 5 An analog diagram of the transfer path when a thermal runaway is generated on a certain module of the battery pack according to an embodiment of the present application is shown.

[0029] Figure 6 An enlarged portion of IV of Figure 5

[0030] Figure 7a and Figure 7b An enlarged portion of V of Figure 5

[0031] Figure 8 A perspective view showing that the exhaust gas inducing frame according to an embodiment of the present application is disposed along the edges of a plurality of battery modules is shown.

[0032] Figure 9 A portion of A of Figure 8

[0033] Figure 10 A portion of B of Figure 9

[0034] Figure 11 A schematic diagram of exhaust gas flow when the battery pack according to the comparative example generates an abnormal phenomenon is shown.

[0035] Figure 12 A schematic diagram of exhaust gas flow when the battery pack according to an embodiment of the present application generates an abnormal phenomenon is shown. DETAILED DESCRIPTION

[0036] The present application will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the application are shown. As this disclosure will make clear to those skilled in the art, the described embodiments can be modified in various different ways without departing from the spirit or scope of the disclosure.

[0037] Portions unrelated to the description will be omitted for clarity of the description of the present application, and the same elements will be denoted by the same reference numerals throughout the specification.

[0038] The size and thickness of each configuration shown in the drawings are arbitrarily shown for better understanding and ease of description, but the present application is not limited thereto. In the drawings, the thickness of layers, films, panels, regions, etc. is exaggerated for clarity. The thickness of some layers and areas is exaggerated for ease of description.

[0039] ​​​​It should be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, the element may be directly on the other element, or there may be an intermediate element present. Conversely, when an element is referred to as being "directly on" another element, there is no intermediate element present. Furthermore, in this specification, the terms "on" or "above" refer to being disposed on or below the object portion, and do not necessarily mean that it is disposed on the upper side of the object portion based on the direction of gravity.

[0040] Unless otherwise expressly stated otherwise, the term “comprising…” and variations such as “containing…” or “including…” shall be understood to imply the inclusion of the stated element, but not to exclude any other element.

[0041] Furthermore, throughout the instruction manual, the phrase "in a plan view" refers to the target part viewed from above, and the phrase "in a cross-sectional view" refers to the cross-section formed by vertically cutting the target part viewed from the side.

[0042] Figure 1 A battery module according to an embodiment of the present invention is shown. Figure 2 This shows the view viewed from bottom to top along the z-axis. Figure 1 A 3D view of the battery module shown.

[0043] refer to Figure 1 and Figure 2 Included Figure 1 The battery module 100 in the battery pack may include: a battery cell stack 102, in which a plurality of battery cells 101 are stacked; a module frame 108 for receiving the battery cell stack 102; and an end plate 120. The battery cells 101 are stacked so as to be electrically interconnected to construct the battery cell stack 102. In particular, as Figure 1 As shown, multiple battery cells 101 can be stacked in a direction parallel to the y-axis.

[0044] In this case, the battery cell stack 102 according to an embodiment of the present invention can be a large-area module comprising a greater number of battery cells 101 than in the prior art. For example, each battery module 100 may include 48 battery cells 101. Regarding the large-area module, the horizontal length of the battery module increases. In this case, the horizontal length may refer to the direction in which the battery cells 101 are stacked, i.e., the length in the direction parallel to the y-axis.

[0045] A module frame 108 for receiving the battery cell stack 102 can include an upper plate 112 and a lower frame 111. The lower frame 111 can be a U-shaped frame. The U-shaped frame can include a bottom and two sides extending upward from respective ends of the bottom. The bottom can cover a lower side (an opposite direction of the z-axis) of the battery cell stack 102, and the sides can cover respective sides (a y-axis direction and an opposite direction thereof) of the battery cell stack 102.

[0046] The upper plate 112 can be formed to have a plate shape for surrounding a remaining upper side (a z-axis direction) except for the lower side and the respective sides surrounded by the U-shaped frame. The upper plate 112 and the lower frame 111 can be combined with each other by welding while contacting each other at corresponding corners, thereby configuring a structure for covering the battery cell stack 102 from top to bottom and from right to left. The battery cell stack 102 can be physically protected by the upper plate 112 and the lower frame 111. To this end, the upper plate 112 and the lower frame 111 can include a metal material having a predetermined strength.

[0047] According to the present embodiment, a vent 121 for communicating with an inside of the battery module 100 and releasing a flame or heat possibly generated inside is provided on the end plate 120. The vent 121 can be provided on a lower side of the end plate 120 in consideration of a connector connection portion for transmitting information. The vent 121 can be connected to an opening (not shown) formed on a portion of the end plate 120, thus communicating with the inside of the battery module 100.

[0048] The module frame 108 can include a module frame protrusion 131 formed such that a bottom of the module frame 108 can extend through the end plate 120. In this case, coolant inputted and outputted through a cooling port 140 connected to an upper side of the module frame protrusion 131 can be supplied to / discharged from a heat sink 130 through the module frame protrusion 131.

[0049] Figure 3 A disassembled perspective view of a battery pack according to an embodiment of the present application is illustrated.

[0050] Reference Figure 3A battery pack 1000 according to an embodiment of the present application includes a plurality of battery modules 100, and an exhaust air inducing frame 300 disposed along edges of the plurality of battery modules 100. The battery modules 100 and the exhaust air inducing frame 300 can be mounted on a battery pack tray 200, and can be received in a battery pack case 400. The battery pack case 400 can include a lower case 410 for receiving the battery pack tray 200, and an upper cover 420 combined to the lower case 410 and covering an upper side of the battery modules 100. A battery pack gasket 411 can be formed between the upper cover 420 and the lower case 410 to seal an inside of the battery pack case 400.

[0051] The battery modules 100 each include a battery cell stack (not shown) disposed in the module frame 110, and include an end plate 120 for covering the battery cell stack exposed to a corresponding end of the module frame 110. In this example, one of the corresponding end plates 120 includes an exhaust air door 121 in communication with an inside of the battery module 100, and releasing a flame or heat possibly generated from the inside. In the battery pack 1000, the exhaust air door 121 is disposed to face an outside of the battery pack 1000, and preferably, as shown in FIG. 1, the exhaust air door 121 can be disposed to face the outside in a manner facing the corresponding end in a first direction (x-axis direction) in the battery pack 1000. Figure 3

[0052] The exhaust air inducing frame 300 can be disposed along edges of all of the battery modules 100. The exhaust air inducing frame 300 can include a pair of vertical beams 310 and a pair of horizontal beams 320 formed in a tubular shape along corresponding sides of the battery pack 1000 and extending in a first direction (x-axis direction) and a second direction (y-axis direction), respectively, and formed to communicate with each other as a whole. Detailed configurations of the exhaust air inducing frame 300 will be described in a later part of the specification.

[0053] ​The battery module 100 and the exhaust induction frame 300 can be mounted on the battery pack tray 200, and if necessary, the battery module 100 and the exhaust induction frame 300 can be fixed to the battery pack tray 200 by a fixing means. The battery module 100, the exhaust induction frame 300, and the battery pack tray 200 can be received in the lower case 410. The lower case 410 can include a bottom side on which the battery pack tray 200 is disposed, and a side wall extending upward from an edge of the bottom side. An upper cover 420 for covering an upper portion of the battery module 100 can be combined to the lower case 410 to protect an internal electric field. In this example, various control and protection systems such as a battery management system (BMS) and a cooling system can be installed together with the battery module 100 in the battery pack case 400.

[0054] At least one rupture portion 500 for discharging generated heat or flame from the inside to the outside can be formed on one side wall of the lower case 410. The detailed configuration of the rupture portion 500 will be described in a later part of the specification.

[0055] A battery pack exhaust induction frame according to an embodiment of the present application will now be described in detail.

[0056] Figure 4 An exploded perspective view of an exhaust induction frame in a battery pack is shown. Figure 3 An exploded perspective view of an exhaust induction frame in a battery pack is shown.

[0057] Referring to Figure 3 and Figure 4 , the exhaust induction frame 300 is formed in a tubular shape along the corresponding side of the battery pack 1000, the exhaust induction frame 300 can include a pair of vertical beams 310 and a pair of horizontal beams 320, the pair of vertical beams 310 and the pair of horizontal beams 320 extend in a first direction (x-axis direction) and a second direction (y-axis direction), respectively, and the pair of vertical beams 310 and the pair of horizontal beams 320 are formed to communicate with each other as a whole.

[0058] The vertical beam 310 has a tubular shape extending in length in the first direction (x-axis direction), and includes a cover 311 for defining the inside of the tubular shape, and a passage 312 formed inside the cover 311. The cover 311 can include a first inner cover 311a disposed close to the battery module 100 in the second direction (y-axis direction), and a first outer cover 311b facing the first inner cover and disposed away from the battery module 100 in the second direction (y-axis direction). At least one of the first inner cover 311a and the first outer cover 311b includes a groove formed in length in the first direction. That is, the cross section of at least one cover of the first inner cover 311a and the first outer cover 311b is formed in a a square tube shape, and the other cover is combined therewith, thereby defining the passage 312. However, the above-described scheme is not limited, as long as the tubular shape can be obtained by the cover 311.

[0059] The horizontal beam 320 has a tubular shape extending in length in the second direction (y-axis direction), and includes a cover 321 for defining the inside of the tubular shape, and a passage 322 formed inside the cover 321. The cover 321 can include a second inner cover 321a disposed close to the battery module 100 in the first direction (x-axis direction), and a second outer cover 321b facing the second inner cover and disposed away from the battery module 100 in the first direction (x-axis direction). At least one of the second inner cover 321a and the second outer cover 321b includes a groove formed in length in the second direction.

[0060] That is, the cross section of at least one cover of the second inner cover 321a and the second outer cover 321b is formed in a a square tube shape, and the other cover is combined therewith, thereby defining the passage 322. In particular, in the present embodiment, as shown in Figure 2 the second inner cover 321a and the second outer cover 321b can be formed to have a square tube shape, respectively, whereby the strength in assembling the horizontal beam 320 can be improved. However, the above-described scheme is not limited, as long as the tubular shape can be obtained by the cover 321.

[0061] The horizontal beam 320 includes a first connection hole 324 formed on a side facing the battery module 100, i.e., a side of the second inner cover 321a. The first connection hole 324 is disposed to communicate with the exhaust door 121 of the battery module 100. The horizontal beam 320 further includes a third connection hole 326 formed on a side disposed in a direction away from the battery module 100 along the second direction, i.e., a side of the second outer cover 321b. The third connection hole 326 is disposed such that the rupture portion 500 can communicate with the passage 322. In this example, the exhaust path bracket 328 can combine the rupture portion 500 and the horizontal beam 320 to guide the path for the exhaust door 121, the passage 322 of the horizontal beam 320, and the rupture portion 500 to communicate with each other.

[0062] The vertical beam 310 includes a second connection hole 314 formed on the first inner cover 311a at a corresponding end disposed close to the horizontal beam 320. The passage 322 of the horizontal beam 320 can communicate with the passage 312 of the vertical beam 310 through the second connection hole 314.

[0063] The rupture portion 500 is connected to the passage 322 of the horizontal beam 320 and includes a rupture side (510, shown in FIG. 7B) that ruptures when input gas has a pressure exceeding a predetermined level. In addition, the rupture portion 500 includes a wing portion (520, shown in FIG. 7B) protruding from a main body in which the rupture side 510 is formed and combined to a side wall of the lower case 410. The wing portion 520 can be fixed to the lower case 410 by using a fastening device such as a screw.

[0064] In the present embodiment, the rupture portion 500 is connected to the passage 322 of the horizontal beam 320 and the rupture portion 500 is fixed with the horizontal beam 320 and the lower case 410, but is not limited thereto, and a configuration for communicating with the passage of the exhaust induction frame 300 and discharging to the outside can be appropriately used. In addition, in the present embodiment, an example in which two rupture portions 500 are formed on one of a pair of horizontal beams 320 is described, but is not limited thereto, and the rupture portion 500 can be installed in the horizontal beam 320 on the other side, or can be installed in the vertical beam 310, and a corresponding position and number can be appropriately selected if necessary.

[0065] By the above configuration, the passage is formed to communicate with all components inside the square-shaped exhaust gas induction frame 300 configured by the vertical beams 310 and the horizontal beams 320, and the passage communicates with the exhaust door 121 and the rupture portion 500 of the battery module 100, thereby inducing heat and flame to the outside when thermal runaway occurs in the battery module 100, and minimizing the influence on the surrounding battery modules. In this example, the flame contained in the generated high-pressure exhaust gas is burned while passing through the path inside the exhaust gas induction frame 300, thereby being discharged to the outside in a safer manner. In the normal case without thermal runaway, the exhaust gas induction frame 300 can be used as a support frame for stably supporting the battery module 100, and can improve the stability of the battery pack 1000.

[0066] Now, a path for controlling the case where a problem such as overvoltage, overcurrent, or overheating occurs in some of the battery modules in the battery pack will be described.

[0067] Figure 5 An analog diagram of a transfer path when thermal runaway occurs in some module of the battery pack according to the embodiment of the present application is shown. Figure 6 An analog diagram of a transfer path when thermal runaway occurs in some module of the battery pack according to the embodiment of the present application is shown. Figure 5 An enlarged portion of IV of FIG. 4. Figure 7a An enlarged portion of IV of FIG. 4. Figure 7b An enlarged portion of IV of FIG. 4. Figure 5 An enlarged portion of V of FIG. 5.

[0068] Referring to Figure 3 to FIG. 7, when an abnormal phenomenon such as overvoltage, overcurrent, or overheating (thermal problem) occurs in the battery module 100, high-pressure exhaust gas is discharged from the inside of the battery module 100 through the exhaust door 121. In this example, high-temperature high-pressure gas and flame are induced to the first connection hole 324 positioned closest to the exhaust door 121 of the battery module 100 from which heat is generated. The high-temperature high-pressure gas and flame input through the first connection hole 324 can be discharged to the outside through the passage formed on the exhaust gas induction frame 300.

[0069] For example, when heat is generated in the battery module 100 disposed at position 1 in Figure 5 As shown in Figure 6 , high-pressure gas and flame can be discharged through the exhaust door 121, can pass through the passage 322 of the horizontal beam 320, can be directly induced to the rupture portion 500, and can be discharged to the outside. In this way, heat generated by the battery module 100 at the position 1 can be discharged to the outside without affecting the surrounding modules.

[0070] In addition, when heat is generated in the battery module 100 disposed at position 2 in Figure 5when heat is generated in the battery module 100 at position 2 in Figure 7a and Figure 7b As shown in FIG. 10, high-temperature high-pressure gas and flames are discharged through the exhaust door 121 and are input to the passage 322 of the horizontal beam 320. The high-temperature high-pressure gas and flames that have been input to the passage 312 of the vertical beam 310 through the second connection hole 314 and have moved along the passage 312 can be induced to the horizontal beam 320 on the side where the rupture portion 500 is located, and can be finally discharged to the outside through the rupture portion 500 formed on the opposite end of the corresponding vertical beam 310. That is, when heat is generated in the battery module 100, high-temperature high-pressure gas and flames can be induced and can be finally discharged to the outside through the passage of the exhaust gas induction frame 300 positioned closest to the exhaust door 121 of the corresponding battery module 100.

[0071] Referring to Figure 7b , the passage of the exhaust door 121 and the passage of the rupture portion 500 can be formed to cross each other. When the passages of the exhaust door 121 and the rupture portion 500 are located on the same line, the high-temperature high-pressure gas and flames that have passed through the exhaust door 121 are transferred to the rupture portion 500, so Figure 7b the rupture side 510 shown in FIG. 10 can easily be ruptured, and the rupture portion 500 can be damaged. According to the present embodiment, the passage of the rupture portion 500 and the passage of the exhaust door 121 cross each other, the high-temperature high-pressure gas and flames that have passed through the exhaust door 121 can pass through the passage in the exhaust gas induction frame 300 formed perpendicular to the direction of the passage of the exhaust door 121, and can be induced to the rupture portion 500 formed perpendicular to the rupture portion 500 of the exhaust gas induction frame 300, and the high-temperature high-pressure gas and flames reach the rupture portion 500 with the switching of the direction, so the pressure transferred to the rupture side 510 is reduced, and the high-temperature high-pressure gas and flames can be stably discharged to the rupture portion 500.

[0072] A battery pack formed with a fire extinguishing member according to an embodiment of the present application will now be described.

[0073] Figure 8 A perspective view showing an exhaust gas induction frame according to an embodiment of the present application disposed along the edges of a plurality of battery modules is shown. Figure 9 A portion of A of FIG. 10 is shown. Figure 8 A portion of B of FIG. 10 is shown. Figure 10 A portion of B of FIG. 10 is shown. Figure 9 A portion of B of FIG. 10 is shown.

[0074] According to an embodiment, a fire extinguishing member 122 can be formed on the passage of the exhaust door 121. The fire extinguishing member 122 can be formed of a fire extinguishing net. The fire extinguishing net can be formed to have different structures and different materials according to the intensity of the flame generated from the battery cell or the type of substance generated from the battery cell. When the fire extinguishing member 122 is disposed on the passage of the exhaust door 121 in a similar manner to the present embodiment and gas and flame are generated from the battery module 100, the flame can pass through the fire extinguishing member 122 and then be extinguished, and the gas can pass through the passage of the exhaust inducing frame 300 and can be discharged to the rupture portion 500. Accordingly, the flame is filtered by the fire extinguishing member 122, and the gas is discharged to the outside of the battery pack, and thus, it can be possible to minimize secondary damage applied to the device in which the battery pack according to the present embodiment is installed.

[0075] Referring to Figure 9 and Figure 10 , the fire extinguishing member 122 can be formed to cover the passage of the exhaust door 121. Further, the fire extinguishing member can be designed to have a predetermined thickness to sufficiently absorb the flame passing through the fire extinguishing member 122. As shown in Figure 10 , a door gasket 121a can be formed between the exhaust door 121 and the end plate 120. The door gasket 121a can prevent the high-temperature high-pressure gas and flame from traveling between the exhaust door 121 and the end plate 120 by sealing the space between the exhaust door 121 and the end plate 120, and can allow the high-temperature high-pressure gas and flame to be discharged to a specific portion through the exhaust inducing frame 300 and the rupture portion 500.

[0076] Figure 11 A schematic view of exhaust gas flow when an abnormal phenomenon is generated from the battery pack according to the comparative example is shown. Figure 12 A schematic view of exhaust gas flow when an abnormal phenomenon is generated from the battery pack according to the embodiment of the present application is shown.

[0077] Referring to Figure 11 , the conventional battery pack 20 does not have a system such as the exhaust door and the exhaust inducing frame according to the embodiment of the present application, and thus the exhaust gas generated from the battery module 10 can be discharged sporadically.

[0078] Referring to Figure 12When an abnormal phenomenon occurs in an initial battery cell in the battery pack 1000 according to the present embodiment, exhaust gas in the battery module 100 is discharged to the outside of the battery module 100 through the exhaust door 121, the exhaust gas is induced by a system connected for each unit and by an exhaust inducing frame 300 including a pair of vertical beams 310 and a pair of horizontal beams 320, the exhaust gas in the battery pack 1000 can be controlled, and safety can be increased.

[0079] Further, the fire extinguishing member 122 is formed for each passage of the exhaust door 121 connected to the battery module 100, a flame is absorbed by the fire extinguishing member 122, and gas can be discharged to the outside through the exhaust inducing frame 300, thereby minimizing collateral damage outside the battery pack.

[0080] The above-described battery module and the battery pack including the same are applicable to various types of devices. The devices include vehicles such as electric bicycles, electric vehicles, and hybrid vehicles, but the present application is not limited thereto, and the present application can be applied to various devices using the battery module and the battery pack including the same, which also belongs to the scope of the present application.

[0081] While the present application has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the application is not to be limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

[0082] <LEGEND>

[0083] 121: exhaust door

[0084] 121a: door gasket

[0085] 122: fire extinguishing member

[0086] 200: battery pack tray

[0087] 300: exhaust inducing frame

[0088] 310: vertical beam

[0089] 320: horizontal beam

[0090] 311: cover of vertical beam

[0091] 312: passage of vertical beam

[0092] 321: cover of horizontal beam

[0093] 322: passage of horizontal beam

[0094] 324: first connection hole

[0095] 314: second connection hole

[0096] 326: third connection hole

[0097] 400: housing

[0098] 500: rupture portion

Claims

1. A battery pack, comprising: Multiple battery modules; An exhaust induction frame is provided along the edge of the battery module and forms an exhaust channel; An exhaust valve, used to connect the interior of the battery module and the exhaust induction frame; as well as A battery pack housing for receiving the battery module and the exhaust induction frame, and including an upper cover and a lower housing. The fire extinguishing component is formed in the passage of the exhaust valve. The exhaust induction frame includes: A pair of vertical beams, the pair of vertical beams being formed parallel to a first direction; and A pair of horizontal beams, wherein the pair of horizontal beams are formed parallel to a second direction, the second direction being transverse to the first direction. The plurality of battery modules are arranged on the lower casing of the battery pack housing along the first direction and / or the second direction. At least one rupture is formed on one side wall of the lower housing, and the passage of the exhaust valve and the passage of the rupture are formed to intersect each other.

2. The battery pack according to claim 1, wherein, The fire extinguishing component is made of fire extinguishing net.

3. The battery pack according to claim 1, wherein, The vertical beam and the horizontal beam are each tubular and include: A cover, the cover being formed along the length of the vertical beam and the horizontal beam; and The channel is surrounded by the cover and is configured to allow gas to pass through.

4. The battery pack according to claim 3, wherein, The fracture is located on the outside of one of the horizontal beams and the vertical beams, and the at least one fracture is connected to the channel.

5. The battery pack according to claim 3, wherein, The cover of the horizontal beam includes at least one first connection hole facing the battery module, and The exhaust valve is configured such that the tube of the exhaust valve communicates with the tube of the horizontal beam facing the first connecting hole.

6. The battery pack according to claim 3, wherein, On the portion of the vertical beam that traverses the horizontal beam, a second connecting hole is installed on the cover of one of the beams, the vertical beam and the horizontal beam, and the second connecting hole communicates with the passage of the other beam.

7. The battery pack according to claim 1, wherein, A battery pack gasket is formed between the upper cover and the lower outer casing.

8. The battery pack according to claim 1, wherein, The battery module includes an end plate for covering the stack of battery cells exposed on the front and rear sides of the module frame. An opening is formed in a portion of the end plate, and The exhaust valve is connected to the opening in the end plate.

9. The battery pack according to claim 8, wherein, A door liner is formed between the exhaust valve and the end plate.

10. An apparatus comprising a battery pack according to any one of claims 1-9.

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