Battery pack and vehicle including the same

Abstract

A battery pack capable of discharging flame gas or dust when a flame occurs according to one embodiment of the present invention comprises a housing, a plurality of battery cell assemblies stacked and arranged to have a moving path through which flame gas or dust can move within the housing, and a venting part disposed in the housing through which flame gas or dust passing through the moving path is discharged.

Description

Technology Field

[0001] The present invention relates to a battery pack and an automobile including the same, and more specifically, to a battery pack including a stacked battery cell assembly capable of easily discharging flame gas or dust when a flame occurs in the battery pack, and an automobile including the same. Background Technology

[0002] Unlike primary batteries, which cannot be recharged, secondary batteries refer to batteries capable of charging and discharging, and are applied not only to portable devices but also to electric vehicles (EVs) and hybrid electric vehicles (HEVs) driven by electric power sources.

[0003] Currently, widely used types of secondary batteries include lithium-ion batteries, lithium-polymer batteries, nickel-cadmium batteries, nickel-hydrogen batteries, and nickel-zinc batteries. The operating voltage of these unit secondary battery cells, or unit battery cells, is approximately 2.5V to 4.6V. Therefore, if a higher output voltage is required, a battery pack is formed by connecting multiple battery cells in series. Additionally, a battery pack is formed by connecting multiple battery cells in parallel depending on the charge / discharge capacity required for the battery pack. Accordingly, the number of battery cells included in the battery pack can be varied depending on the required output voltage or charge / discharge capacity.

[0004] A battery cell assembly is placed inside the battery pack. In this case, when a flame occurs in the battery cell assembly, flame gases and dust accumulate and are discharged within the single-layer battery pack.

[0005] Therefore, it is difficult to discharge flame gases and dust from inside the battery pack to the outside. Specifically, when the battery cell assembly is arranged in a single layer, the space inside the battery pack is narrow, making it difficult to discharge flame gases and dust, and causing the problem of flame spread. The problem to be solved

[0006] The present invention aims to solve the aforementioned problems by providing a battery pack and an automobile that facilitate the movement of flame gas and dust when a flame occurs and rapidly discharge the flame gas and dust to the outside. means of solving the problem

[0007] A battery pack capable of discharging flame gas or dust when a flame occurs according to one embodiment of the present invention comprises a housing, a plurality of battery cell assemblies stacked and arranged to have a moving path through which flame gas or dust can move within the housing, and a venting part disposed in the housing through which flame gas or dust passing through the moving path is discharged.

[0008] In addition, the battery pack described above may further include a cooling plate for cooling the battery cell assembly.

[0009] In addition, a plurality of the above-mentioned moving channels may be spaced apart along the stacking direction of the battery cell assembly.

[0010] In addition, one or more of the plurality of moving channels may be disposed between the battery cell assembly and the cooling plate.

[0011] In addition, the battery pack described above may further include an exhaust passage positioned inside the housing in a direction intersecting the moving passage, which guides flame gas or dust passing through any one of the plurality of moving passages to the venting section.

[0012] In addition, a plurality of the above-mentioned venting parts may be spaced apart and arranged on the housing.

[0013] Additionally, the exhaust passage may include a first exhaust passage disposed between one side of the battery cell assembly and the housing, and a second exhaust passage disposed between the other side of the battery cell assembly and the housing.

[0014] In addition, the venting portion may be positioned on one side of the housing and on the other side of the housing to guide the first exhaust passage or flame gas or dust passing through the first exhaust passage to be discharged.

[0015] In addition, one side of the cooling plate may be positioned to protrude in a direction parallel to the moving channel.

[0016] In addition, the battery pack described above may further include a cooling fluid supply pipe connected to one side of the cooling plate in the housing to supply cooling fluid.

[0017] Alternatively, a battery pack capable of discharging flame gas or dust when a flame occurs according to an embodiment of the present invention comprises a housing, a first battery cell assembly disposed inside the housing, a second battery cell assembly supported by the housing and disposed above the first battery cell assembly, a first passage disposed between the first battery cell assembly and the second battery cell assembly to allow the movement of flame gas or dust, and a second passage disposed between the second battery cell assembly and the housing to allow the movement of flame gas or dust.

[0018] Additionally, the battery pack described above may further include a first exhaust passage into which flame gas or dust passing through the first moving passage or the second moving passage is introduced, and a venting part for discharging flame gas or dust passing through the first exhaust passage to the outside of the housing, which is arranged within the housing in a direction parallel to the stacking direction of the first battery cell assembly and the second battery cell assembly.

[0019] In addition, the venting section may include a plurality of first venting sections spaced apart on one side of the housing.

[0020] Additionally, the battery pack described above may further include a second exhaust passage spaced apart from the first exhaust passage centered on the first battery cell assembly or the second battery cell assembly.

[0021] Additionally, the venting section may further include a second venting section disposed on the other side of the housing to discharge flame gas or dust passing through the second exhaust passage to the outside of the housing.

[0022] Additionally, the battery pack described above may include a first cooling plate, at least a portion thereof disposed below the first battery cell assembly to cool the first battery cell assembly, and a second cooling plate disposed spaced apart from the first battery cell assembly and the first exhaust passage to cool the second battery cell assembly.

[0023] A battery pack including

[0024] Additionally, one side of the second cooling plate may be extended from the second battery cell assembly more than the other side of the second cooling plate.

[0025] In addition, the battery pack described above may further include a flame cover having a plurality of holes formed therein, positioned to cover the upper portions of the first battery cell assembly and the second battery cell assembly.

[0026] In addition, the plurality of holes may be connected to the first moving channel or the second moving channel.

[0027] An automobile according to one embodiment of the present invention includes a battery pack according to any one of claims 1 to 10. Effects of the invention

[0028] A battery pack according to one embodiment of the present invention can easily discharge flame gas or dust to the outside when a flame occurs.

[0029] In addition, a battery pack according to one embodiment of the present invention can effectively prevent flames from spreading to other layers of a stacked battery cell assembly. Brief explanation of the drawing

[0030] FIG. 1 is a drawing showing a state in which the first housing cover of a battery pack according to an embodiment of the present invention is opened, and FIG. 2 is a drawing showing the second housing cover of a battery pack in an open state according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view showing a cross- section of a battery pack according to an embodiment of the present invention, and FIGS. 4 and 5 are perspective views showing a battery cell assembly according to an embodiment of the present invention, and FIG. 6 is a drawing showing a battery pack installed in a vehicle according to an embodiment of the present invention. Specific details for implementing the invention

[0031] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Accordingly, in some embodiments, well-known process steps, well-known device structures, and well-known techniques are not specifically described to avoid the present invention being interpreted ambiguously. Throughout the specification, like reference numerals refer to like components.

[0032] In drawings, thicknesses may be enlarged to clearly represent multiple layers and regions. Throughout the specification, the same reference numerals are used for similar parts. When a part such as a layer, film, region, or plate is described as being "above" another part, this includes not only cases where it is "immediately above" another part, but also cases where there is another part in between. Conversely, when a part is described as being "immediately above" another part, it means that there is no other part in between. Furthermore, when a part such as a layer, film, region, or plate is described as being "below" another part, this includes not only cases where it is "immediately below" another part, but also cases where there is another part in between. Conversely, when a part is described as being "immediately below" another part, it means that there is no other part in between.

[0033] FIG. 1 is a drawing showing a state in which the first housing cover of a battery pack according to an embodiment of the present invention is open, FIG. 2 is a drawing showing a state in which the second housing cover of a battery pack according to an embodiment of the present invention is open, FIG. 3 is a cross-sectional view showing a cross- section of a battery pack according to an embodiment of the present invention, FIG. 4 and FIG. 5 are perspective views showing a battery cell assembly according to an embodiment of the present invention, and FIG. 6 is a drawing showing a battery pack installed in a vehicle according to an embodiment of the present invention.

[0034] A battery pack (101) according to one embodiment of the present invention easily discharges flame gas or dust when a flame occurs.

[0035] A battery pack (101) according to one embodiment of the present invention includes a housing (100), a battery cell assembly (200), and a venting part (400), as illustrated in FIGS. 1 to 3.

[0036] The housing (100) forms the outer shape of the battery pack (101). Additionally, the housing (100) has a space formed inside.

[0037] A battery cell assembly (200) is placed inside a housing (100). Additionally, a plurality of battery cell assemblies (200) are stacked to have a movement path (510) through which flame gas or dust can move. Specifically, a plurality of battery cell assemblies (200) are stacked along the height direction inside the housing (100), and a plurality of them may be spaced apart with the movement path (510) in between.

[0038] For example, a space for arranging a battery cell assembly (200) is formed inside the housing (100), and a first housing cover (110) and a second housing cover (120) may be installed on both sides.

[0039] Additionally, the battery cell assembly (200) may be placed inside the housing (100). And the moving path (510) may be arranged in a direction parallel to the longitudinal direction of the battery cell assembly (200).

[0040] The venting section (400) is positioned in the housing (100) to allow flame gas or dust passing through the passageway (510) to be discharged. Specifically, the venting section (400) guides the flame gas or dust passing through the passageway (510) to be discharged outside the housing (100).

[0041] With such a configuration, the battery pack (101) according to one embodiment of the present invention can effectively prevent flame gas or dust from moving along the movement path (510) and transferring to other stacked battery cell assemblies when a flame occurs.

[0042] In addition, a battery pack (101) according to one embodiment of the present invention may further include a cooling plate (300).

[0043] The cooling plate (300) can cool the battery cell assembly (200). Specifically, the cooling plate (300) is positioned at the bottom of the battery cell assembly (200), and a cooling fluid moving along a cooling channel formed inside can cool the battery cell assembly (200) by exchanging heat with the battery cell assembly (200). That is, the cooling plate (300) can cool the heat generated by the operation of the battery cell assembly (200).

[0044] The battery cell assembly (200) may include a cooling plate (300).

[0045] In addition, a plurality of moving channels (510) according to one embodiment of the present invention may be spaced apart along the stacking direction of the battery cell assembly (200).

[0046] Multiple moving channels (510) may be spaced apart along the stacking direction of the battery cell assembly (200) inside the housing (100). Specifically, the moving channels (510) may be positioned between multiple battery cell assemblies (200) or between the upper part of the battery cell assembly (200) and the housing (100) facing the upper part of the battery cell assembly (200).

[0047] That is, multiple moving channels (510) can be spaced apart from each other along the height direction of the housing (100).

[0048] Accordingly, multiple moving channels (510) are arranged inside the housing (100) to guide flame gas or dust to move effectively when a flame occurs in any one of the stacked battery cell assemblies (200).

[0049] In addition, one or more of the plurality of moving channels (510) according to one embodiment of the present invention may be disposed between the battery cell assembly (200) and the cooling plate (300).

[0050] One or more of the plurality of moving channels (510) may be positioned between the battery cell assembly (200) and the cooling plate (300) to guide flame gas or dust to move.

[0051] Specifically, the battery cell assembly (200) may include a first battery cell assembly (210) and a second battery cell assembly (220). The first battery cell assembly (210) and the second battery cell assembly (220) may be stacked along the height direction of the housing (100).

[0052] The moving channel (510) may include a first moving channel (511) and a second moving channel (512). The first moving channel (511) may be positioned between the first battery cell assembly (210) and the second battery cell assembly (220). The first moving channel (511) may be a spaced-out space between the first battery cell assembly (210) and the second battery cell assembly (220). Additionally, the second moving channel (512) may be positioned between the upper part of the second battery cell assembly (220) and the housing (100) facing the upper part of the second battery cell assembly (220).

[0053] The cooling plate (300) may include a first cooling plate (310) and a second cooling plate (320). At least a portion of the first cooling plate (310) may be positioned below the first battery cell assembly (210). At least a portion of the second cooling plate (320) may be positioned below the second battery cell assembly (220). That is, the first moving channel (511) may be positioned between the upper surface of the first battery cell assembly (210) and the lower surface of the second cooling plate (320).

[0054] Accordingly, flame gas or dust moving along the first moving path (511) positioned between the first battery cell assembly (210) and the second cooling plate (320) can prevent flame from being transferred to the second battery cell assembly (220).

[0055] In addition, a battery pack (101) according to one embodiment of the present invention may further include an exhaust passage (520).

[0056] The exhaust passage (520) may be positioned inside the housing (100) in a direction intersecting the movement passage (510). Additionally, the exhaust passage (520) may guide flame gas or dust that has passed through any one of the plurality of movement passages (510) to the venting section (400). Furthermore, the exhaust passage (520) may be positioned parallel to the height direction of the housing (100) to guide the exhaust gas that has passed through the movement passage (510) to move to the venting section (400).

[0057] Specifically, the exhaust passage (520) can guide flame gas or dust passing through the first moving passage (511) or the second moving passage (512) to be discharged to the outside of the housing (100) through the venting section (400). Additionally, the exhaust passage (520) can be arranged to communicate with the first moving passage (511) and the second moving passage (512).

[0058] That is, the exhaust path (520) can guide flame gas or dust that has passed through the first moving path (511) or the second moving path (512) to be directed to the venting section (400) formed in the housing (100).

[0059] In addition, a plurality of venting portions (400) of a battery pack (101) according to one embodiment of the present invention may be spaced apart on the housing (100).

[0060] The venting section (400) is spaced apart on the housing (100) to allow flame gas or dust to be discharged to the outside of the housing (100).

[0061] For example, a plurality of venting sections (400) may be spaced apart in a direction parallel to the exhaust passage (520) on one side of the housing (100). Since the venting sections (400) may be spaced apart in a direction parallel to the exhaust passage (520), exhaust gas introduced through the exhaust passage (520) can be rapidly discharged to the outside of the housing (100).

[0062] In addition, the exhaust passage (520) of the battery pack (101) according to one embodiment of the present invention may include a first exhaust passage (521) and a second exhaust passage (522).

[0063] The first exhaust passage (521) may be positioned between one side of the battery cell assembly (200) and the housing (100). Additionally, the first exhaust passage (521) may guide flame gas or dust that has traveled along the first travel passage (511) and the second travel passage (512) to travel.

[0064] The second exhaust passage (522) may be positioned between the other side of the battery cell assembly (200) and the housing (100). Additionally, the second exhaust passage (522) may be spaced apart from the first exhaust passage (521) and the battery cell assembly (200). The second exhaust passage (522) may guide flame gas or dust that has traveled along the first travel passage (511) and the second travel passage (512) to travel.

[0065] That is, the first exhaust passage (521) and the second exhaust passage (522) may be spaced apart along the longitudinal direction of the first moving passage (511) or the second moving passage (512).

[0066] In addition, the battery pack (101) according to one embodiment of the present invention may include a venting section (400) and a first venting section (410) and a second venting section (420).

[0067] The first venting section (410) may be disposed on one side of the housing (100). Specifically, the first venting section (410) may guide flame gas or dust passing through the first exhaust passage (521) to be discharged. Additionally, a plurality of venting sections may be disposed spaced apart from each other on one side of the housing (100).

[0068] For example, the first venting section (410) may include a plurality of venting holes. Alternatively, the first venting section (410) may have a plurality of venting sections spaced apart along the width direction of the battery cell assembly (200).

[0069] The second venting section (420) may be positioned on the other side of the housing (100). Specifically, the second venting section (420) may guide flame gas or dust passing through the second exhaust passage (522) to be discharged. Additionally, multiple second venting sections (420) may be spaced apart along the length direction of the second exhaust passage (522) as well as along the width direction of the battery cell assembly (200).

[0070] For example, the second venting section (420) may include a plurality of venting holes.

[0071] Alternatively, the first venting section (410) and the second venting section (420) may be arranged parallel to the moving path (510) to guide flame gas or dust passing through the moving path (510) and the exhaust path (520) to be quickly discharged from the housing (100).

[0072] For example, a plurality of first venting sections (410) and second venting sections (420) may be spaced apart on one side and the other side of the housing (100) along the height and width directions of the battery cell assembly (200).

[0073] Accordingly, the first venting section (410) can guide flame gas or dust within the first exhaust passage (521) to be branched and discharged into multiple venting sections. Additionally, the second venting section (420) can guide flame gas or dust within the second exhaust passage (522) to be branched and discharged into multiple venting sections.

[0074] In addition, one side of the cooling plate (300) according to one embodiment of the present invention may be arranged to protrude in a direction parallel to the moving channel (510).

[0075] As illustrated in FIGS. 4 and 5, one side of the cooling plate (300) may be extended and protruded from the battery cell assembly (200) with a relatively longer length than the other side of the cooling plate (300). Specifically, one side of the cooling plate (300) may be extended and protruded from the battery cell assembly (200) with a longer length than the other side of the cooling plate (300).

[0076] That is, both ends of the cooling plate (300) in a direction parallel to the longitudinal direction of the battery cell assembly (200) can be arranged to extend and protrude from the battery cell assembly (200).

[0077] The length from one side of the cooling plate (300) to the other side of the cooling plate (300) is formed to be relatively longer than the length of the battery cell assembly (200), so that when a flame occurs, the flame can be prevented from spreading in the stacking direction of the battery cell assembly (200).

[0078] For example, one side of the cooling plate (300) may be positioned relatively closer to the first exhaust passage (521) than to the second exhaust passage (522).

[0079] In addition, a battery pack (101) according to one embodiment of the present invention may further include a cooling fluid supply pipe (610).

[0080] The cooling fluid supply pipe (610) may be connected to one side of the cooling plate (300). Additionally, the cooling fluid supply pipe (610) may allow cooling fluid to be supplied through a cooling channel formed inside the cooling plate (300). Furthermore, at least a portion of the cooling fluid supply pipe (610) may be placed within the housing (100).

[0081] One side of the first cooling plate (310) and one side of the second cooling plate (320) can receive and distribute cooling fluid from the cooling fluid supply pipe (610). That is, the cooling fluid supply pipe (610) can stably supply cooling fluid to a plurality of stacked cooling plates (300).

[0082] In addition, a battery pack (101) according to one embodiment of the present invention may further include a cooling fluid recovery pipe (620).

[0083] The cooling fluid recovery pipe (620) may be spaced apart from the cooling fluid supply pipe (610) and connected to one side of the cooling plate (300). Additionally, the cooling fluid recovery pipe (620) may be positioned to transfer the cooling fluid, which has undergone heat exchange while passing through a cooling channel formed inside the cooling plate (300), to a cooling device outside the housing (100). Furthermore, at least a portion of the cooling fluid recovery pipe (620) may be spaced apart from the cooling fluid supply pipe (610) and the battery cell assembly (200) in the width direction within the housing (100).

[0084] One side of the first cooling plate (310) and one side of the second cooling plate (320) can be heat exchanged through the cooling fluid recovery pipe (620) so that a cooling fluid at a relatively higher temperature than the supply temperature can be recovered. Additionally, the cooling fluid recovery pipe (620) can stably recover cooling fluid from a plurality of stacked cooling plates (300).

[0085] In addition, a battery cell assembly (200) according to one embodiment of the present invention may include a flame cover (700), as illustrated in FIGS. 4 and 5.

[0086] The flame cover (700) may be positioned to cover the upper part of the battery cell assembly (200). Additionally, a plurality of holes (710) may be spaced apart and formed in the flame cover (700). When a flame occurs in the battery cell assembly (200), flame gas or dust may be discharged from the battery cell assembly (200) through the flame holes (710).

[0087] Specifically, a plurality of holes (710) may be arranged to communicate with the moving channel (510). Additionally, the flame cover (700) may be supported on the battery cell assembly (200).

[0088] In addition, a plurality of battery cells may be arranged in the battery cell assembly (200).

[0089] A first flame cover (700) may be supported on the first battery cell assembly (210). A plurality of holes (710) formed in the first flame cover (700) may be in communication with the first movement path (511).

[0090] A second flame cover (700) may be supported on the battery cell assembly (200). A plurality of holes (710) formed in the second flame cover (700) may be in communication with the second movement path (512).

[0091] In addition, a battery pack (101) according to one embodiment of the present invention may further include a support bracket (800).

[0092] The support bracket (800) is supported by the flame cover (700) and can maintain a gap between the flame cover (700) covering the upper part of the battery cell assembly (200) placed at the bottom and the cooling plate (300) cooling the battery cell assembly (200) placed at the top.

[0093] Specifically, a plurality of support brackets (800) are spaced apart along the longitudinal direction of the battery cell assembly (200) to effectively maintain a space for flames to be discharged through a plurality of holes (710) formed in the flame cover (700). Additionally, the support brackets (800) can support a plurality of battery cell assemblies (200) so that a movement path (510) is formed, allowing them to be stacked.

[0094] For example, the support bracket (800) may be supported in some areas by the flame cover (700), and the remaining areas may be bent upwards to be stacked with a gap between the multiple battery cell assemblies (200).

[0095] Alternatively, a battery assembly (200) or a battery module may be disposed inside the housing (100) of a battery pack (101) according to one embodiment of the present invention. Specifically, the battery module may include a plurality of battery cells and a module case that accommodates the cells.

[0096] FIG. 6 is a drawing for explaining a vehicle (10) including at least one battery pack (101).

[0097] In addition, according to one embodiment of the present invention, the vehicle (10) may include the battery pack (101) described above. FIG. 6 is a drawing illustrating an electric vehicle (10) equipped with a battery pack (101). In the electric vehicle (10), the wheels are driven by a motor that receives power from the battery pack (101), and the electric vehicle can be operated.

[0098] Referring to FIG. 6, an electric vehicle (10) according to the present invention may include at least one battery pack (101) according to the present invention. An automobile (10) according to one embodiment of the present invention may be, for example, an electric vehicle (10), a hybrid vehicle (10), or a plug-in hybrid vehicle (10), and includes a battery pack (101) according to one embodiment of the present invention. The electric vehicle (10) includes a four-wheeled vehicle (10) and a two-wheeled vehicle (10).

[0099] The electric vehicle (10) above operates by receiving power from a battery pack (101) according to one embodiment of the present invention. In addition, the electric vehicle (10) according to the present invention may further include various other components included in the electric vehicle (10) in addition to such battery cells or battery pack (101). For example, the electric vehicle (10) according to the present invention may further include a battery pack (101) including a BMS, a vehicle body, a motor, a control device such as an ECU (electronic control unit), etc.

[0100] Hereinafter, with reference to FIGS. 1 to 4, the discharge of flame gas or dust when a flame occurs in a battery pack (101) according to an embodiment of the present invention will be described.

[0101] The battery cell assembly (200) includes a first battery cell assembly (210), a second battery cell assembly (220), a third battery cell assembly (230), and a fourth battery cell assembly (240).

[0102] The cooling plate (300) includes a first cooling plate (310), a second cooling plate (320), a third cooling plate (330), and a fourth cooling plate (340). At least a portion of the cooling plate (300) is positioned at the bottom of the battery cell assembly (200), and both sides may be formed by bending to cover the sides of the battery cell assembly (200).

[0103] The flame cover (700) can be positioned to cover the top of each battery cell assembly (200).

[0104] The support bracket (800) is supported on the upper part of the flame cover (700) to maintain the stacking of the battery cell assembly (200).

[0105] The first moving path (511) may be formed in the spaced-apart space between the flame cover (700) of the first battery cell assembly (210) and the second cooling plate (320) positioned at the bottom of the second battery cell assembly (220).

[0106] The second moving path (512) can be formed in the spaced-apart space between the flame cover (700) of the second battery cell assembly (220) and the third cooling plate (330) positioned at the bottom of the third battery cell assembly (230).

[0107] The third moving channel (513) may be formed in the spaced-apart space between the flame cover (700) of the third battery cell assembly (230) and the fourth cooling plate (340) positioned at the bottom of the fourth battery cell assembly (240).

[0108] The fourth moving path (514) can be formed in the spaced-apart space between the flame cover (700) of the fourth battery cell assembly (240) and the housing (100) facing the flame cover (700).

[0109] If a flame occurs in the third battery cell assembly (230), the flame gas or dust is moved along the third moving path (513). The flame gas or dust may be moved in a direction toward one or more of the first exhaust path (521) or the second exhaust path (522).

[0110] Flame gas or dust introduced into the first exhaust passage (521) can be discharged to the outside of the housing (100) through a plurality of first venting sections (410). Specifically, the flame gas and dust introduced into the first exhaust passage (521) can be distributed and guided to be discharged toward a plurality of first venting sections (410) by being arranged in a direction intersecting the moving passage (510).

[0111] Alternatively, flame gas or dust introduced into the second exhaust passage (522) may be discharged to the outside of the housing (100) through a plurality of second venting sections (420). The flame gas or dust introduced into the second exhaust passage (522) may be distributed and guided to be discharged toward the plurality of second venting sections (420) by being arranged in a direction intersecting the moving passage (510). That is, a plurality of second venting sections (420) may be arranged along the longitudinal direction of the second exhaust passage (522) to guide the flame gas and dust to be rapidly discharged from the housing (100).

[0112] That is, flame gas or dust moved along any one of the multiple moving paths (510) flows into a first exhaust path (521) or a second exhaust path (522) arranged parallel to the height direction of the housing (100) and moves along the height direction of the housing (100). In addition, the flame gas or dust can be easily distributed to multiple first venting sections (410) adjacent to the first exhaust path (521) or multiple second venting sections (420) adjacent to the second exhaust path (522) and quickly discharged.

[0113] Additionally, flame gas or dust moving along the third moving path (513) can be prevented from being transferred to the fourth battery cell assembly (240) by the fourth cooling plate (340) which is positioned to extend and protrude beyond the fourth battery cell assembly (240).

[0114] Alternatively, even if flames are generated in the second battery cell assembly (220) and the third battery cell assembly (230) and flame gas or dust is moved through multiple moving paths (510), such as the second moving path (512) and the third moving path (513), they can be effectively discharged to the outside of the housing (100) by the multiple venting sections (400).

[0115] With such a configuration, the battery pack (101) according to one embodiment of the present invention can easily discharge flame gas or dust to the outside when a flame occurs.

[0116] Additionally, the battery pack (101) can effectively prevent the flame from spreading to other layers of the stacked battery cell assembly (200).

[0117] Although the present invention has been described with reference to preferred embodiments as described above, it is not limited to the aforementioned embodiments, and various changes and modifications may be made by those skilled in the art within the scope of the invention without departing from the spirit of the invention. Explanation of the symbols

[0118] 100 : Housing 101 : Battery Pack 200 : Battery cell assembly 210: First battery cell assembly 220: Second battery cell assembly 300 : Cooling plate 310: First cooling plate 320 : Second cooling plate 400 : Venting section 410: 1st venting section 420 : 2nd venting section 510: Travel Euro 511: 1st Mobile Euro 512 : 2nd Mobile Euro 520: Exhaust Euro 521: 1st exhaust euro 522: Second exhaust euro

Claims

Claim 1 A battery pack capable of discharging flame gas or dust when a flame occurs, comprising: a housing; a plurality of battery cell assemblies stacked and arranged within the housing to have a moving path through which flame gas or dust can move; and a venting portion disposed in the housing to discharge flame gas or dust that has passed through the moving path. Claim 2 A battery pack according to claim 1, further comprising a cooling plate for cooling the battery cell assembly. Claim 3 In paragraph 2, the battery pack in which a plurality of moving channels are spaced apart along the stacking direction of the battery cell assembly. Claim 4 In paragraph 3, at least one of the plurality of moving paths is a battery pack disposed between the battery cell assembly and the cooling plate. Claim 5 A battery pack according to paragraph 3, further comprising an exhaust passage disposed inside the housing in a direction intersecting the moving passage and guiding flame gas or dust that has passed through any one of the plurality of moving passages to the venting section. Claim 6 In paragraph 3, the above venting portion is a battery pack in which a plurality of venting portions are spaced apart on the housing. Claim 7 In claim 5, the exhaust passage comprises: a first exhaust passage disposed between one side of the battery cell assembly and the housing; and a second exhaust passage disposed between the other side of the battery cell assembly and the housing. Claim 8 In claim 7, the venting portion is disposed on one side of the housing and on the other side of the housing to guide the first exhaust passage or flame gas or dust passing through the first exhaust passage to be discharged. Claim 9 In paragraph 4, one side of the cooling plate is a battery pack protruding in a direction parallel to the moving channel. Claim 10 In claim 9, the battery pack further comprises a cooling fluid supply pipe connected to one side of the cooling plate to supply cooling fluid in the housing. Claim 11 A battery pack capable of discharging flame gas or dust when a flame occurs, comprising: a housing; a first battery cell assembly disposed inside the housing; a second battery cell assembly supported by the housing and disposed above the first battery cell assembly; a first passage disposed between the first battery cell assembly and the second battery cell assembly to allow the movement of flame gas or dust; and a second passage disposed between the second battery cell assembly and the housing to allow the movement of flame gas or dust. Claim 12 A battery pack according to claim 11, comprising: a first exhaust passage arranged within the housing in a direction parallel to the stacking direction of the first battery cell assembly and the second battery cell assembly, into which flame gas or dust passing through the first moving passage or the second moving passage is introduced; and a venting portion for discharging flame gas or dust passing through the first exhaust passage to the outside of the housing. Claim 13 In claim 12, the above venting portion comprises a battery pack including a plurality of first venting portions spaced apart on one side of the housing. Claim 14 A battery pack according to claim 13, further comprising a second exhaust passage spaced apart from the first exhaust passage centered on the first battery cell assembly or the second battery cell assembly. Claim 15 A battery pack according to claim 14, wherein the venting part further comprises a second venting part disposed on the other side of the housing to discharge flame gas or dust passing through the second exhaust path to the outside of the housing. Claim 16 A battery pack according to claim 14, comprising: a first cooling plate having at least a portion disposed below the first battery cell assembly to cool the first battery cell assembly; and a second cooling plate disposed spaced apart from the first battery cell assembly and the first exhaust passage to cool the second battery cell assembly. Claim 17 In claim 16, one side of the second cooling plate is a battery pack extending from the second battery cell assembly more than the other side of the second cooling plate. Claim 18 A battery pack according to claim 11, further comprising a flame cover having a plurality of holes formed therein, positioned to cover the upper portion of the first battery cell assembly and the second battery cell assembly. Claim 19 In paragraph 18, the plurality of holes are connected to the first moving path or the second moving path, forming a battery pack. Claim 20 An automobile comprising a battery pack according to any one of paragraphs 1 through 10.

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