Battery pack and vehicle including the same

Abstract

A battery pack according to one aspect of the present invention comprises: a plurality of battery cells; the battery pack shell is used for containing a containing space of a plurality of battery cells, the battery pack shell comprises a side frame, the side frame forms the side wall of the containing space, a gas channel is formed in the side frame, and the gas channel is communicated with the side frame; one or more windows allowing communication with the gas channel are arranged on the surface adjacent to the accommodating space; and a bottom frame forming a bottom of the accommodation space and having one or more dimples for collecting particles discharged from the battery cell accommodated in the accommodation space.

Description

Technical Field

[0001] This application claims priority to Korean Patent Application No. 10-2023-0008989 filed in Korea on January 20, 2023, the disclosure of which is incorporated herein by reference.

[0002] The present invention relates to a battery module, a battery pack and a vehicle including the battery module, and more particularly, to a battery pack having a plurality of battery cells capable of being charged and discharged, and a vehicle including the battery pack. Background Art

[0003] Generally, a secondary battery refers to a battery that can be repeatedly charged and discharged, such as a lithium ion battery, a lithium polymer battery, a nickel cadmium battery, a nickel metal hydride battery, a nickel zinc battery, etc. A battery cell as the most basic secondary battery can provide an output voltage of about 2.5V to 4.2V.

[0004] Recently, secondary batteries have been applied to devices requiring high output voltage and large charging capacity, such as electric vehicles or ESS (energy storage system), and therefore, battery packs manufactured by configuring battery modules by connecting a plurality of battery cells in series, parallel, or a combination of series and parallel and reconnecting the battery modules in series, parallel, or a combination of series and parallel have been widely used.

[0005] However, as disclosed in Korean Unexamined Patent Publication No. 10-2022-0052183, according to the prior art, a battery pack is manufactured by storing battery cells in a box-shaped metal shell and then storing these battery modules in a battery pack shell to construct a battery module, but this leads to the problem of increasing the weight and volume of the entire battery pack and reducing the energy density of the battery pack.

[0006] Furthermore, according to the prior art, since a plurality of battery cells are densely arranged in a limited internal space of a battery pack to increase the energy density of the battery pack, if exhaust gas is generated from one battery cell inside the battery pack, it is difficult to discharge the exhaust gas in an intended direction, and heat energy exhausted from the battery cell and ignition sources such as dust, ashes, etc. accumulate inside the battery pack, causing a chain reaction of thermal runaway or fire in other battery cells. Summary of the invention

[0007] Technical issues

[0008] The present disclosure is designed to solve the problems of the related art, and thus the present disclosure aims to provide a battery pack and a vehicle including the battery pack, which are capable of preventing cascading thermal runaway or fire of battery cells accommodated therein while having high energy density due to reduction in weight and volume.

[0009] Technical Solution

[0010] According to one aspect of the present disclosure, a battery pack is provided, which includes: a plurality of battery cells; and a battery pack housing, the battery pack housing having a storage space, the storage space being configured to store the plurality of battery cells, wherein the battery pack housing includes: a side frame, the side frame constituting a side wall of the storage space, the side frame having a gas passage therein, and the side frame having at least one window, the window being arranged on a surface adjacent to the storage space, the window being connected to the gas passage; and a bottom frame, the bottom frame constituting the bottom of the storage space and having at least one pocket, the pocket being configured to collect particles discharged from the plurality of battery cells stored in the storage space.

[0011] In one embodiment, each of the plurality of battery cells may include an electrode lead at an end portion facing the side frame, and the at least one window of the side frame may be provided at a position facing the electrode lead.

[0012] In one embodiment, the at least one recess of the bottom frame may be disposed below the at least one window.

[0013] In one embodiment, the side frame may further have a guide surface configured to guide particles discharged from the plurality of battery cells to the recess.

[0014] In one embodiment, the battery pack case may further include a plurality of partitions configured to divide the accommodation space into a plurality of independent sub-accommodation spaces, and the side frame may include a plurality of windows corresponding to the plurality of sub-accommodation spaces.

[0015] In one embodiment, the bottom frame may include a plurality of recesses corresponding to the plurality of sub-accommodating spaces.

[0016] In one embodiment, the bottom frame may further include a cooling medium path through which the cooling medium moves.

[0017] In one embodiment, the side frame may further include a capture groove disposed below the gas channel and configured to capture particles flowing into the gas channel through the at least one window.

[0018] In one embodiment, the side frame may further include a plurality of capture fins protruding from an inner surface of the capture groove at regular intervals and configured to capture particles flowing into the gas channel.

[0019] In one embodiment, the plurality of capture fins protrude to be inclined in a moving direction of exhaust gas that is discharged from the plurality of battery cells and moves along the gas passage.

[0020] In one embodiment, the side frame may further include a gas outlet configured to discharge exhaust gas moving along the gas passage to the outside of the battery pack case.

[0021] In one embodiment, the battery pack housing may further include a gas valve, which is configured to: open the gas outlet if the internal pressure of the gas channel is higher than the external pressure of the battery pack; and close the gas outlet if the internal pressure of the gas channel is equal to or lower than the external pressure.

[0022] A vehicle according to another aspect of the present disclosure may include the battery pack according to any one of the above-described embodiments.

[0023] Beneficial Effects

[0024] According to the present invention, since a plurality of battery cells that can be charged and discharged are directly accommodated in a battery case of a battery pack, it is possible to reduce the weight and volume of the battery pack and improve its energy density.

[0025] In addition, since the side frame of the battery pack housing has a gas channel therein, and since the window connected to the gas channel is arranged on a surface adjacent to the accommodating space for accommodating the battery cells, the gas generated by the battery cells in the accommodating space can be discharged in a predetermined direction, thereby preventing chain thermal runaway or fire of other battery cells and improving the safety of the battery pack.

[0026] In addition, the bottom frame of the battery pack housing has recesses configured to collect particles such as dust and ash emitted from the battery cells accommodated in the accommodation space, thereby preventing obstruction of the gas passage or occurrence of fire due to the particles and further improving the safety of the battery pack.

[0027] Furthermore, since the capture groove is provided inside the side frame to capture particles flowing into the gas passage, it is possible to prevent high-temperature particles from being discharged to the outside of the battery pack.

[0028] Furthermore, the bottom frame has a cooling medium path through which the cooling medium passes and constitutes an accommodation space, so that a heat sink separately installed in the battery pack case can be omitted, thereby simplifying the structure of the battery pack and reducing manufacturing costs.

[0029] In addition, those skilled in the art to which the present disclosure pertains will be able to clearly understand from the following description that various technical problems not mentioned above can be solved according to various embodiments of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a perspective view showing a battery pack according to an embodiment of the present disclosure.

[0031] Figure 2 It is shown Figure 1 A diagram showing the internal structure of a battery pack.

[0032] Figure 3 yes Figure 1 An exploded perspective view of the battery pack is shown.

[0033] Figure 4 is a diagram showing battery cells accommodated in a battery pack according to an embodiment of the present disclosure.

[0034] Figure 5 It is shown Figure 3 A diagram of the side frame of the battery pack is shown.

[0035] Figure 6 It is shown Figure 3 A diagram of the bottom frame of the battery pack is shown.

[0036] Figure 7 is along Figure 1 A cross-sectional view of the battery pack taken along line AA' in FIG.

[0037] Figure 8 is along Figure 1 A cross-sectional view of the battery pack taken along line BB'.

[0038] Fig. 9 is along Figure 1 A cross-sectional view of the battery pack taken along line CC'.

[0039] Fig.10 is a diagram illustrating a gas exhaust portion of a battery pack according to a modified embodiment of the present disclosure.

[0040] Fig.11 It is shown Fig.10 A diagram showing the gas emission status of a battery pack is shown.

[0041] Fig.12 is a diagram showing a vehicle according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0042] Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings to illustrate solutions to the technical problems corresponding to the present disclosure. However, when describing the present disclosure, descriptions of related known technologies that may obscure the subject matter of the present disclosure may be omitted. In addition, the terms used in this specification are defined in consideration of the functions in the present disclosure and may vary according to the intentions of designers, manufacturers, etc. or their habits. Therefore, the definitions of the terms described below should be based on the description of the entire specification.

[0043] Figure 1 is a perspective view showing a battery pack 10 according to an embodiment of the present disclosure.

[0044] like Figure 1 As shown, the battery pack 10 according to an embodiment of the present disclosure includes at least one battery cell that can be charged and discharged and a battery pack case 200 accommodating the battery cell.

[0045] In this case, the battery pack case 200 may have an accommodation space for accommodating a plurality of battery cells. To this end, the battery pack case 200 may include a side frame 210 constituting a side wall of the accommodation space, a bottom frame 220 constituting a bottom of the accommodation space, and a cover 230 covering the top of the accommodation space.

[0046] As will be explained below, the side frame 210 may have a gas passage therein, and may have at least one window disposed on one surface adjacent to the receiving space, the window communicating with the gas passage.

[0047] In addition, the bottom frame 220 may include at least one recess configured to collect particles discharged from the battery cells accommodated in the accommodation space.

[0048] The cover 230 may be configured to cover the top of the accommodating space to seal the accommodating space.

[0049] In one embodiment, a gas outlet 218 for discharging exhaust gas generated from the battery cells accommodated in the pack case 200 to the outside of the pack case 200 may be provided on an outer surface of the pack case 200. For example, the gas outlet 218 may be provided on an outer surface of the side frame 210.

[0050] Figure 2 Shows Figure 1 The internal structure of the battery pack 10 is shown.

[0051] like Figure 2 As shown, the battery pack case 200 of the battery pack 10 may be configured to have an accommodation space therein and accommodate a plurality of battery cells 100 in the accommodation space.

[0052] A plurality of battery cells 100 may be stacked on one another in one direction (X-axis direction) to form a battery cell assembly CA.

[0053] The side frame 210 of the pack case 200 may be configured to constitute a side circumference of the accommodation space and discharge exhaust gas discharged from the battery cells 100 to the outside through the gas outlet 218 .

[0054] The bottom frame 220 of the battery pack case 200 may be configured to constitute a bottom of the accommodation space and support the battery cells accommodated in the accommodation space.

[0055] The cover 230 of the pack case 200 may be configured to be coupled and fixed to the side frame 210 and cover the top of the accommodation space to seal the accommodation space.

[0056] In addition, the battery pack case 200 may further include a partition W that divides the accommodation space into a plurality of independent sub-accommodation spaces S. In this case, one or more battery cells 100 may be accommodated in each of the sub-accommodation spaces S.

[0057] The battery pack case 200 may be made of a material having mechanical rigidity and heat resistance. For example, the battery pack case 200 may be made of metal, polymer synthetic resin, or a combination thereof.

[0058] According to an embodiment, the battery pack 10 may further include various electrical components (not shown) that control charging and discharging operations of the battery cells accommodated in the pack case 200 or monitor SOC (state of charge), SOH (state of health), etc. These electronic components may be accommodated in the pack case 200 together with the battery cells.

[0059] Figure 3 yes Figure 1 An exploded perspective view of the battery pack 10 is shown.

[0060] like Figure 3 As shown, each of the plurality of battery cells 100 accommodated in the battery pack 10 may have an electrode lead 110 at an end facing the side frame 210 in the lateral direction (Y-axis direction).

[0061] The side frame 210 may have a gas passage therein. In addition, the side frame 210 may have at least one window 212, which communicates with the gas passage, disposed on one surface adjacent to the accommodation space for accommodating the battery cell 100. In this case, each window 212 may be disposed at a position facing the electrode lead 110 of the corresponding battery cell 100.

[0062] The bottom frame 220 may have at least one recess 222 configured to collect particles discharged from the battery cell accommodated in the accommodation space. In this case, each recess 222 may be disposed below the corresponding window 212.

[0063] The partition W of the battery pack housing 200 may divide the accommodation space into a plurality of independent sub-accommodation spaces. In this case, the side frame 210 may have a plurality of windows 212 corresponding to the plurality of sub-accommodation spaces. In addition, the bottom frame 220 may have a plurality of recesses 222 corresponding to the plurality of sub-accommodation spaces.

[0064] As described above, the battery pack 10 has the plurality of battery cells 100 distributed to the independent sub-accommodating spaces, thereby mainly blocking heat propagation between the battery cells.

[0065] In addition, the battery pack 10 can discharge high-temperature exhaust gas through the window 212 set for each sub-containing space, and can collect and isolate particles (such as dust and ashes) that serve as ignition sources by the recess 222 set for each sub-containing space, thereby secondarily preventing heat propagation between battery cells.

[0066] Figure 4 A battery cell 100 accommodated in a battery pack according to an embodiment of the present disclosure is shown.

[0067] like Figure 4 As shown, the battery cell 100 is a basic secondary battery that can be charged and discharged, and may have electrode leads 110 at both ends facing the side frame 210 in a lateral direction (Y-axis direction).

[0068] For example, the battery cell 100 may include a pouch-type secondary battery. In this case, the battery cell 100 may be manufactured by storing an electrode assembly including a stacked positive electrode and a negative electrode with a separator interposed therebetween and an electrolyte material in a pouch-type case and by sealing the case. The electrode lead 110 may be electrically connected to the electrode assembly.

[0069] If gas is generated inside the battery cell 100, the gas may be discharged through the relatively fragile electrode lead portion among the various portions of the battery cell 100. The gas discharged through the electrode lead portion as described above may flow into the gas channel through the above-mentioned window 212 of the side frame 210, move along the gas channel, and be discharged to the outside of the battery pack case 200 through the gas outlet 218.

[0070] Figure 5 Shows Figure 3 A side frame 210 of the battery pack is shown.

[0071] like Figure 5As shown, the side frame 210 may have a gas channel and a window 212 therein, the window 212 being connected to the gas channel, and the window 212 being disposed on one surface adjacent to the battery cell 100. In this case, the window 212 may be disposed at a position facing the electrode lead 110 of the battery cell 100.

[0072] As described above, exhaust gas discharged through the electrode lead portion of the battery cell 100 may flow into the gas channel through the window 212 of the side frame 210 , move along the gas channel, and then be discharged to the outside of the pack case 200 through the gas outlet 218 .

[0073] In addition, the side frame 210 may further have a guide surface 210 a configured to guide particles discharged from the battery cells 100 to the recess 222 of the bottom frame 220 disposed below each window 212 .

[0074] In this case, the side frame 210 may have a plurality of guide surfaces 210 a which respectively correspond to the plurality of recesses 222 provided in the bottom frame 220 .

[0075] Figure 6 Shows Figure 3 The bottom frame 220 of the battery pack is shown.

[0076] like Figure 6 As shown, the bottom frame 220 may have dimples 222 configured to collect particles discharged from the battery cells 100. In this case, the bottom frame 220 may have a plurality of dimples 222 corresponding to a plurality of sub-accommodation spaces divided by the partitions W of the battery pack case 200.

[0077] As will be explained below, the bottom frame 220 may further include a cooling medium path through which a cooling medium moves. That is, the bottom frame 220 may be configured to function both as a support structure for supporting the battery cells and as a heat sink for cooling the battery cells.

[0078] Figure 7 is along Figure 1 A cross-sectional view of the battery pack taken along line AA' in FIG.

[0079] like Figure 7 As shown, a battery cell assembly CA including a plurality of battery cells 100 stacked on one another may be accommodated in each of the sub-accommodation spaces S independently partitioned by the separators W.

[0080] In addition, the dimples 222 of the bottom frame 220 provided at the bottom of each sub-accommodating space S may be configured to be recessed in the gravity direction (-Z axis direction). The dimples 222 may collect particles discharged from the battery cells 100 and falling due to their own weight.

[0081] In an embodiment, the dimple 222 may have an adhesive layer 222a on its inner surface. In this case, particles flowing into the dimple 222 may adhere to the adhesive layer 222a, thereby blocking the movement of the particles.

[0082] Figure 8 is along Figure 1 A cross-sectional view of the battery pack taken along line BB'.

[0083] like Figure 8 As shown, the battery pack 10 may have the above-mentioned recess 222 and window 212 for each sub-accommodation space S. That is, the exhaust gas G exhausted around the electrode lead 110 of the battery cell 100 accommodated in each sub-accommodation space S may flow into the gas channel 214 in the side frame 210 through the window 212 of the side frame 210 provided at a position facing the corresponding electrode lead 110.

[0084] In addition, particles discharged from the battery cell 100 together with the exhaust gas G may fall due to their own weight to be accommodated in the recesses 222 of the bottom frame 220. In this case, the guide surface 210a of the side frame 210 may guide the particles to the recesses 222.

[0085] In one embodiment, an adhesive layer 222a may be provided on the inner surface of the dimple 222. In this case, particles flowing into the dimple 222 may be attached and fixed to the adhesive layer 222a.

[0086] As described above, the bottom frame 220 may have the cooling medium path 224 through which the cooling medium moves. The cooling medium moving through the cooling medium path 224 may absorb heat generated from the battery cells 100 and discharge it to the outside.

[0087] As described above, the bottom frame 220 of the battery pack case 200 is configured to function as both a support structure for supporting the battery cells and a heat sink for cooling the battery cells, thereby simplifying the structure of the battery pack and reducing the manufacturing cost thereof.

[0088] In addition, the side frame 210 may have a capture groove 216 disposed below the gas passage 214 and capturing particles flowing into the gas passage 214 through the window 212. That is, particles that cannot be received by the recess 222 of the bottom frame 220 and enter the gas passage 214 through the window 212 due to the pressure of the exhaust gas G may fall when colliding with the inner surface of the gas passage 214, and thus be captured by the capture groove 216 disposed below the gas passage 214.

[0089] In one embodiment, the side frame 210 may further include a plurality of capture fins 216 a configured to protrude from the inner surface of the capture groove 216 at regular intervals and capture particles flowing into the gas channel.

[0090] In addition, in one embodiment, the side frame 210 may further include a blocking wall 212a disposed between adjacent windows in the gas channel 214. The blocking wall 212a may prevent the high-temperature exhaust gas G flowing into the gas channel 214 through the first window from leaving through a second window adjacent to the first window immediately after colliding with the inner surface of the gas channel 214.

[0091] Fig. 9 is along Figure 1 A cross-sectional view of the battery pack taken along line CC'.

[0092] like Fig. 9 As shown, the exhaust gas G flowing into the gas passage 214 of the side frame 210 through the window 212 may move through the gas passage 214 and be discharged to the outside of the battery pack case 200 through the gas outlet 218 .

[0093] In this case, the blocking wall 212 a disposed between adjacent windows may prevent the high temperature exhaust gas G flowing into the gas channel 214 through the first window from being discharged through the second window adjacent to the first window immediately after colliding with the inner surface of the gas channel 214 .

[0094] In addition, particles that cannot be accommodated in the recesses 222 of the bottom frame 220 and enter the gas channel 214 through the window 212 due to the pressure of the exhaust gas G may fall when colliding with the inner surface of the gas channel 214, and thus be captured by the capture groove 216 set below the gas channel 214.

[0095] In one embodiment, the side frame 210 may further include a plurality of capture fins 216a configured to protrude from the inner surface of the capture groove 216 at regular intervals and capture particles flowing into the gas passage. That is, the particles flowing into the gas passage 214 may fall to the capture groove 216 due to their own weight and may be captured between the capture fins.

[0096] In this case, the plurality of capture fins 216a may be configured to protrude to be inclined in the moving direction of the exhaust gas G that is discharged from the battery cell and moves along the gas passage 214. As a result, the plurality of capture fins 216a may promote the flow of the exhaust gas G while capturing particles falling from the gas passage 214, thereby suppressing turbulence within the gas passage 214.

[0097] The capture fin 216a may be made of a heat conductive material. The capture fin 216a made of a heat conductive material may also be used as a cooling fin for cooling the exhaust gas G.

[0098] Fig.10 is a diagram showing a gas discharge portion of a battery pack 10A according to a modified embodiment of the present disclosure.

[0099] like Fig.10 As shown, a battery pack 10A according to a modified embodiment of the present disclosure may include a configuration corresponding to that of the above-described battery pack 10 .

[0100] That is, the pack case of the battery pack 10A may include the above-described side frames 210 , the bottom frame 220 , and the cover 230 , and specifically, may further include a gas valve 240 that opens and closes the gas outlet 218 .

[0101] The gas valve 240 may be configured to open the gas outlet 218 if the internal pressure of the gas channel provided inside the side frame 210 is higher than the external pressure of the battery pack 10A, and to close the gas outlet 218 if the internal pressure of the gas channel is equal to or lower than the external pressure of the battery pack 10A.

[0102] To this end, the gas valve 240 may include a swing door 242 configured to swing upward or downward to open or close the gas outlet 218 and a stopper 244 limiting a swing angle of the swing door 242 .

[0103] For example, the swing door 242 may be configured to be supported by a hinge and rotate in the up and down directions. In this case, if the internal pressure of the gas passage is equal to or lower than the external pressure, the swing door 242 may be in close contact with the gas outlet 218 due to the weight of the swing door 242 or the pressure difference between the inside and the outside of the gas outlet 218, thereby closing the gas outlet 218.

[0104] On the other hand, if the internal pressure of the gas passage is higher than the external pressure, the swing door 242 may be swung upward by the air or gas exhausted from the gas outlet 218 , thereby opening the gas outlet 218 .

[0105] Fig.11 It is shown Fig.10 A diagram showing the gas discharge state of the battery pack 10A is shown.

[0106] like Fig.11As shown, if the internal pressure of the gas channel becomes higher than the external pressure of the battery pack 10A due to the high-pressure and high-temperature exhaust gas generated from the battery cells contained in the battery pack 10A, the swing door 242 can swing upward to open the gas outlet 218 by the air or gas discharged from the gas outlet 218, so that the exhaust gas G can be discharged through the opened gas outlet 218.

[0107] In this case, the stopper 244 may limit the swing angle of the swing door 242 to control the exhaust gas G from advancing upward.

[0108] In addition, just after the discharge of the exhaust gas G is completed, if the internal pressure of the gas channel becomes lower than the external pressure of the battery pack 10A, the swing door 242 can swing downward to close the gas outlet 218, thereby preventing oxygen from flowing into the battery pack 10A quickly and thereby suppressing the fire or explosion of the battery pack 10A.

[0109] Fig.12 A vehicle 2 according to an embodiment of the present disclosure is shown.

[0110] like Fig.12 As shown, the vehicle 2 according to the embodiment of the present disclosure may include one or more battery packs 10 or 10A according to the various embodiments described above. In this case, the battery pack 10 or 10A may provide the electric energy required for various operations of the vehicle 2.

[0111] For reference, the battery pack 10 or 10A according to the present disclosure may be applied to ESS (Energy Storage System) and various electric devices or electric systems in addition to vehicles.

[0112] As described above, according to the present disclosure, since a plurality of battery cells that can be charged and discharged are directly accommodated in a pack case of a battery pack, it is possible to reduce the weight and volume of the battery pack and improve its energy density.

[0113] In addition, since the side frame of the battery pack housing has a gas channel therein, and since the window connected to the gas channel is arranged on a surface adjacent to the accommodating space for accommodating the battery cells, the gas generated by the battery cells in the accommodating space can be discharged in a predetermined direction, thereby preventing chain thermal runaway or fire of other battery cells and improving the safety of the battery pack.

[0114] In addition, the bottom frame of the battery pack case has recesses configured to collect particles such as dust and ash discharged from the battery cells accommodated in the accommodation space, thereby preventing obstruction of the gas passage or occurrence of fire due to the particles and further improving the safety of the battery pack.

[0115] Furthermore, since the capture groove is provided inside the side frame to capture particles flowing into the gas passage, it is possible to prevent high-temperature particles from being discharged outside the battery pack.

[0116] Furthermore, the bottom frame has a cooling medium path through which the cooling medium moves and constitutes an accommodation space, so that a heat sink separately installed in the battery pack case can be omitted, thereby simplifying the structure of the battery pack and reducing manufacturing costs.

[0117] Furthermore, it goes without saying that the embodiments according to the present disclosure can solve various technical problems other than the technical problems mentioned in this specification in the related technical field and in the related technical field.

[0118] So far, the present disclosure has been described with reference to specific embodiments. However, it will be clearly understood by those skilled in the art that various modified embodiments can be implemented within the technical scope of the present disclosure. Therefore, the embodiments disclosed above should be considered as those intended to describe the present disclosure, rather than those intended to limit the present disclosure. In other words, the true scope of the technical ideas of the present disclosure is shown in the claims, and all differences within the scope equivalent thereto should be interpreted as included in the present disclosure.

Claims

1. A battery pack, comprising: Multiple battery cells; as well as a battery pack housing having a housing space configured to accommodate the plurality of battery cells, Wherein, the battery pack housing comprises: a side frame constituting a side wall of the accommodation space, the side frame having a gas passage therein, and the side frame having at least one window disposed on a surface adjacent to the accommodation space, the window being in communication with the gas passage; and A bottom frame constituting a bottom of the accommodation space and having at least one recess configured to collect particles discharged from the plurality of battery cells accommodated in the accommodation space.

2. The battery pack according to claim 1, in, Each of the plurality of battery cells includes an electrode lead at an end portion facing the side frame, and The at least one window of the side frame is disposed at a position facing the electrode lead.

3. The battery pack according to claim 1, in, The at least one recess of the bottom frame is disposed below the at least one window.

4. The battery pack according to claim 3, in, The side frame also has a guide surface configured to guide particles discharged from the plurality of battery cells to the recess.

5. The battery pack according to claim 1, in, The battery pack housing further includes a plurality of partitions configured to divide the accommodation space into a plurality of independent sub-accommodation spaces, and Wherein, the side frame includes a plurality of windows corresponding to the plurality of sub-accommodating spaces.

6. The battery pack according to claim 5, in, The bottom frame includes a plurality of recesses corresponding to the plurality of sub-accommodating spaces.

7. The battery pack according to claim 1, in, The bottom frame also includes a cooling medium path through which a cooling medium moves.

8. The battery pack according to claim 1, in, The side frame further includes a capture groove disposed below the gas passage and configured to capture particles flowing into the gas passage through the at least one window.

9. The battery pack according to claim 8, in, The side frame further includes a plurality of capture fins protruding from an inner surface of the capture groove at regular intervals and configured to capture particles flowing into the gas channel.

10. The battery pack according to claim 9, in, The plurality of capture fins protrude to be inclined in a moving direction of exhaust gas that is discharged from the plurality of battery cells and moves along the gas passage.

11. The battery pack according to claim 1, in, The side frame further includes a gas outlet configured to discharge exhaust gas moving along the gas passage to the outside of the battery pack case.

12. The battery pack according to claim 11, in, The battery pack housing also includes a gas valve, which is configured to: open the gas outlet if the internal pressure of the gas channel is higher than the external pressure of the battery pack; and close the gas outlet if the internal pressure of the gas channel is equal to or lower than the external pressure.

13. A vehicle comprising the battery pack according to any one of claims 1 to 12.

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