Battery pack and vehicle including the same

Abstract

An object of the present invention is to secure a free volume by forming a through-hole in a part of a pack case and inserting an insertion member into the pack case. The present invention includes a partition wall frame interposed between battery modules, the partition wall frame including: a first frame and a second frame each having a through hole; and an insertion member interposed between the first frame and the second frame, in which the insertion member is made of a material that melts at a predetermined temperature, and, if a specific battery module is on fire, blocks a flame for a predetermined time at the beginning of a fire in the specific battery module to prevent the flame from moving to an adjacent battery module, the insertion member is then melted after the time elapses so that the gas or flame is sufficiently discharged to the adjacent battery modules.

Description

Technical Field

[0001] This application is based on and claims the benefit of priority from Korean Patent Application No. 10-2023-0101524 filed in the Korean Intellectual Property Office on August 3, 2023, the disclosure of which is incorporated herein by reference in its entirety.

[0002] The present disclosure relates to a battery pack and a vehicle including the same, and more particularly, to a battery pack capable of preventing a pressure increase inside the battery pack and a vehicle including the same. Background Art

[0003] As technology develops and demand for mobile devices increases, demand for secondary batteries as energy sources is rapidly increasing. Nickel-cadmium batteries or hydrogen-ion batteries have been used as conventional secondary batteries, but in recent years, lithium secondary batteries have become widely used because they have almost no memory effect compared to nickel-based secondary batteries and have advantages such as free charge and discharge, extremely low self-discharge rate, and high energy density.

[0004] These lithium secondary batteries mainly use lithium-based oxides and carbon materials as positive electrode active materials and negative electrode active materials, respectively. Lithium secondary batteries include an electrode assembly, in which a positive electrode plate and a negative electrode plate coated with positive electrode active materials and negative electrode active materials, respectively, are provided with a separator therebetween; and a shell material is used to seal and contain the electrode assembly and the electrolyte (i.e., the battery housing).

[0005] Lithium secondary batteries are composed of a positive electrode, a negative electrode, a separator and an electrolyte interposed therebetween, and are classified into lithium ion batteries (LIBs), polymer lithium ion batteries (PLIBs), etc. according to the positive electrode active materials and negative electrode active materials used. Generally, the electrodes of these lithium secondary batteries can be made by coating the positive electrode or negative electrode active material on a current collector such as an aluminum sheet or copper sheet, mesh, thin film, foil, etc., and then drying.

[0006] Lithium secondary batteries are currently attracting much attention due to their advantages such as high operating voltage and significantly high energy density. However, since they use organic electrolytes, overcharging of lithium secondary batteries may cause overcurrent and overheating, which may cause explosion or fire in severe cases.

[0007] Various types of secondary batteries include a battery module having a case for protecting a battery cell, a plurality of battery cells being stacked and inserted into the case, and a battery pack accommodating a plurality of battery modules.

[0008] If a thermal event occurs in the battery cells arranged in the battery module, heat energy may be trapped between the battery modules, causing the internal pressure to increase rapidly, and due to the explosion of the battery module, the flame may spread to other adjacent battery modules, causing a chain reaction of fire.

[0009] For example, if free volume (a buffer space through which flame or gas can move) between adjacent battery modules disposed inside a battery pack is insufficient, there is a problem in that flame or gas cannot move, which increases internal pressure and increases the risk of explosion. Summary of the invention

[0010] Technical issues

[0011] Therefore, the present disclosure is directed to providing a battery pack and a vehicle including the battery pack, which can prevent a rapid increase in internal pressure of the battery pack by ensuring a free volume between battery modules when a thermal event occurs.

[0012] However, the technical problems to be solved by the present disclosure are not limited to the above problems, and those skilled in the art will clearly understand other problems not mentioned herein from the following description.

[0013] Technical Solution

[0014] In one aspect of the present disclosure, a battery pack is provided, comprising: a plurality of battery modules in which a plurality of battery cells are stacked; a battery pack case configured to accommodate the plurality of battery modules and having a through hole formed in at least a portion thereof; and an insertion member inserted into the battery pack case.

[0015] In one embodiment, at least a portion of the battery pack housing can be configured as a double frame structure, the double frame structure including: a first frame; and a second frame, the second frame is arranged parallel to the first frame and is spaced apart from the first frame by a preset gap, and an insertion member can be inserted into the gap between the first frame and the second frame.

[0016] In one embodiment, each of the first frame and the second frame may be configured as a truss structure formed with a through hole.

[0017] In one embodiment, the truss structure may include: an edge portion configured to form an edge; and a connection portion configured to connect the edge portions to form a through hole.

[0018] In one embodiment, the insert member may be made of a material that melts at a preset temperature.

[0019] In one embodiment, the insert member may be made of a silicone pad.

[0020] In one embodiment, the insert member may be made of a mica mat.

[0021] In one embodiment, the insert member may be a fire extinguishing agent pad having a fire extinguishing material.

[0022] In one embodiment, the fire extinguishing material may include Novec.

[0023] In one embodiment, the battery pack may further include a discharge path member that is spaced apart from the battery module to cover at least a portion of the battery module, and is configured to provide a discharge path for flame or gas.

[0024] In one embodiment, the exhaust path member may be provided in plurality, and the plurality of exhaust path members may be spaced apart at a preset gap to cover the battery module.

[0025] In one embodiment, the battery pack housing may include: a lower frame on which a plurality of battery modules are placed; a side frame extending upward from an edge of the lower frame; an inner frame extending upward from an interior of the lower frame and connected to the side frame; a barrier frame connected to the inner frame and inserted between the plurality of battery modules; and an upper frame connected to the side frame, wherein a plurality of discharge path members may be connected to the side frame and the barrier frame.

[0026] In one embodiment, the plurality of exhaust path members may be configured such that flames or gases move upward through gaps between the plurality of exhaust path members.

[0027] In one embodiment, a space may be formed between the upper frame and the discharge path member, and flame or gas may be discharged in a preset direction through the space.

[0028] Meanwhile, in another aspect of the present disclosure, a vehicle including the above-mentioned battery pack is also provided.

[0029] Beneficial Effects

[0030] The embodiments of the present disclosure have the effect of preventing a rapid increase in internal pressure of a battery pack by ensuring a free volume between battery modules when a thermal event occurs.

[0031] Furthermore, the present disclosure has the effect of ensuring the stability of the battery module.

[0032] However, the effects that can be obtained through the present disclosure are not limited to the above-mentioned effects, and those skilled in the art will clearly understand other technical effects not mentioned above from the following disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is an exploded perspective view showing a battery pack according to a first embodiment of the present disclosure.

[0034] Figure 2 It is shown Figure 1 A cross-sectional view of a battery module included in a battery pack.

[0035] Figure 3 yes Figure 1 Magnified view of part A.

[0036] Figure 4 1 and 2 are perspective views and partially enlarged views showing an insertion member in a battery pack according to a first embodiment of the present disclosure.

[0037] Figure 5 yes Figure 4 Some parts of the floor plan are omitted.

[0038] Figure 6 is a perspective view of the battery pack according to the first embodiment of the present disclosure with the insertion member removed from the battery pack case.

[0039] Figure 7 yes Figure 6 Some parts of the floor plan are omitted.

[0040] Figure 8 is a perspective view showing a battery pack according to a second embodiment of the present disclosure.

[0041] Fig. 9 yes Figure 8 Magnified view of part B.

[0042] Fig.10 is along Figure 8 A cross-sectional view taken along line C-C' in which some parts are omitted.

[0043] Fig.11 is a diagram for illustrating a vehicle including a battery pack according to each embodiment of the present disclosure. DETAILED DESCRIPTION

[0044] Hereinafter, the preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Before the description, it should be understood that the terms used in the specification and the appended claims should not be interpreted as limited to the general and dictionary meanings, but should be interpreted according to the meanings and concepts corresponding to the technical aspects of the present disclosure based on the principle that the inventor is allowed to appropriately define the terms for the best interpretation. Therefore, the descriptions presented herein are only preferred examples for illustrative purposes and are not intended to limit the scope of the present disclosure, so it should be understood that other equivalents and modifications may be made thereto without departing from the scope of the present disclosure.

[0045] In the accompanying drawings, for the convenience and clarity of description, the size of each component or a specific part of a component is enlarged, omitted or schematically shown. Therefore, the size of each component does not fully reflect the actual size. If it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present disclosure, the description will be omitted.

[0046] As used herein, the term “coupled” or “connected” refers not only to a case where one member is directly coupled or directly connected to another member, but also includes a case where one member is indirectly coupled or indirectly connected to another member through a joining member.

[0047] Figure 1 is an exploded perspective view showing a battery pack according to a first embodiment of the present disclosure, Figure 2 It is shown Figure 1 A cross-sectional view of a battery module included in a battery pack, Figure 3 yes Figure 1 A magnified view of part A. Figure 4 is a perspective view and a partially enlarged view showing an insertion member in a battery pack according to a first embodiment of the present disclosure, Figure 5 yes Figure 4 Some parts of the floor plan are omitted. Figure 6 is a perspective view of the battery pack of the first embodiment of the present disclosure with the insertion member removed from the battery pack case, and Figure 7 yes Figure 6 Some parts of the floor plan are omitted.

[0048] Reference Figure 1 , the battery pack 10 of the first embodiment of the present disclosure may include a plurality of battery modules 100 , a battery pack case 200 , and an insertion member 300 .

[0049] The plurality of battery modules 100 may be arranged and disposed in various ways. Figure 1 As shown, the plurality of battery modules 100 may be arranged horizontally and vertically, but is not limited thereto.

[0050] Reference Figure 2 , the battery module 100 may include a plurality of battery cells 110 and a module housing 120 .

[0051] A plurality of battery cells 110 may be stacked on each other. The battery cell 110 may have various structures, and a plurality of battery cells 110 may be stacked in various ways.

[0052] The battery cell 110 can be configured as a structure of stacking multiple unit cells (in which positive plates, separators and negative plates are arranged in sequence) or multiple bi-cells (in which positive plates, separators, negative plates, separators, positive plates, separators and negative plates are arranged in sequence) according to the battery capacity.

[0053] The battery cell 110 may have an electrode lead. The electrode lead is a terminal that is exposed to the outside and connected to an external device and may be made of a conductive material. The electrode lead may include a positive electrode lead and a negative electrode lead.

[0054] The positive electrode lead and the negative electrode lead may be arranged on opposite sides with respect to the longitudinal direction of the battery cell 110 , or the positive electrode lead and the negative electrode lead may be located on the same side with respect to the longitudinal direction of the battery cell 110 .

[0055] The battery cell 110 may have a plurality of boxes (not shown) accommodating the battery cells 110. Each box (not shown) may be manufactured by plastic injection molding, and a plurality of boxes (not shown) having a storage portion capable of storing the battery cells 110 may be stacked. A box assembly in which a plurality of boxes (not shown) are stacked may have a connector element or a terminal element.

[0056] The connector element may include, for example, various types of electrical connection parts or members for connecting with a BMS (Battery Management System, not shown) capable of providing data on the voltage or temperature of the battery cell 110 , etc.

[0057] In addition, the terminal element is a main terminal connected to the battery cell 110 and includes a positive terminal and a negative terminal. The terminal element may have a terminal bolt for electrical connection with an external structure. Meanwhile, the battery cell 110 may have various shapes.

[0058] Reference Figure 2 , a plurality of battery cells 110 are stacked and accommodated in a module case 120. The module case 120 surrounds the plurality of battery cells 110, thereby protecting the battery cells 110 from external vibration or impact.

[0059] The module housing 120 may be formed in a shape corresponding to a stacked shape formed by stacking a plurality of battery cells 110. For example, if a stack formed by stacking a plurality of battery cells 110 has a hexahedral shape, the module housing 120 may also be formed in a hexahedral shape to correspond thereto. However, the present disclosure is not limited thereto. Here, the module housing 120 may include an upper module housing, a lower module housing, and a side module housing.

[0060] In addition, the module housing 120 can be manufactured, for example, by bending a metal plate, and as a result, the module housing 120 can be manufactured as an integral piece. If the module housing 120 is manufactured as an integral piece, the coupling process can be simplified and easy. Alternatively, the module housing 120 can be configured as a single type and coupled by welding or the like. However, the material of the module housing 120 is not limited to metal.

[0061] Reference Figure 1 and Figure 3 , a plurality of battery modules 100 are housed in a battery pack housing 200. Figure 6 Through holes 244 and 245 are formed in at least a portion of the battery pack case 200 (eg, in a barrier frame 240 disposed in the battery pack case 200 ).

[0062] The battery pack case 200 may include, for example, a lower frame 210, a side frame 220, an inner frame 230, a barrier frame 240, and an upper frame 250. Here, through holes 244 and 245 may be formed in at least one of the side frame 220, the inner frame 230, and the barrier frame 240.

[0063] The lower frame 210 is configured so that a plurality of battery modules 100 are seated thereon. The lower frame 210 may be formed in a square plate shape, but is not limited thereto. The lower frame 210 forms the bottom of the battery pack case 200.

[0064] The side frame 220 may be configured to extend upward from the edge of the lower frame 210. The side frame 220 defines the height of the battery pack housing 200, and a preset space 600 is formed between the side frame 220 and the lower frame 210. In addition, a plurality of battery modules 100 are arranged in the space 600 between the side frame 220 and the lower frame 210. The side frame 220 may include a relatively long long side frame and a relatively short short side frame. Alternatively, the side frames 220 may have the same length.

[0065] The inner frame 230 extends upward from the inner side of the lower frame 210, and is coupled with the side frames 220 and the barrier frame 240. One or more inner frames 230 may be provided, and a plurality of battery modules 100 may be arranged to face each other based on the inner frames 230.

[0066] The barrier frame 240 is coupled to the inner frame 230. In addition, the barrier frame 240 is interposed between the plurality of battery modules 100. Figure 1 In the embodiment of the present invention, one barrier frame 240 is disposed between two adjacent battery modules 100 , but the present invention is not limited thereto. In addition, the barrier frame 240 is disposed at the end of the battery module 100 .

[0067] The upper frame 250 is coupled to the side frame 220. As explained in detail later, between the upper frame 250 and the discharge path member 400 (see Fig.10 ) can form a space 600, and flame or gas can be discharged through the space 600.

[0068] At least a portion of the battery pack case 200 may be configured as a double frame structure including a first frame 241 and a second frame 242. Figure 1 Although the barrier frame 240 is configured as a double frame structure, the side frame 220 and the inner frame 230 may also be configured as a double frame structure. For ease of explanation, the following description will focus on the case where the barrier frame 240 is configured as a double frame structure including a first frame 241 and a second frame 242.

[0069] Reference Figure 1 and Figure 4, the first frame 241 of the barrier frame 240 is positioned close to the battery module 100. In addition, referring to Figure 6 , a first through hole 244 is formed in the first frame 241. The first frame 241 may be made of a metal material, but the material is not limited thereto. In addition, the first frame 241 may have a square plate shape, but the shape is not limited thereto.

[0070] The second frame 242 of the barrier frame 240 is arranged in parallel with the first frame 241 with a preset gap 243 (see Figure 7 ). In addition, refer to Figure 6 , a second through hole 245 is formed in the second frame 242. In addition, the second frame 242 may be made of the same material as the first frame 241, for example, may be made of a metal material, but the material is not limited thereto. In addition, the second frame 242 may be formed in the same shape as the first frame 241, and for example, may be manufactured in a square plate shape, but the shape is not limited thereto.

[0071] In addition, refer to Figure 5 and Figure 7 , the insertion member 300 is inserted into the gap 243 between the first frame 241 and the second frame 242. The insertion member 300 will be described later.

[0072] Reference Figure 6 Each of the first frame 241 and the second frame 242 may be manufactured as a truss structure formed with through holes 244 and 245. The truss structure may have various structures. Figure 4 and Figure 6 , the truss structure can be configured to include an edge portion 246 and a connecting portion 247 .

[0073] The edge portion 246 is configured to form an edge of the frame (the first frame 241 or the second frame 242). The connecting portion 247 connects the edge portions 246, thereby forming the through holes 244 and 245. Figure 6 , the first frame 241 and the second frame 242 are provided to have a truss structure through a plurality of right triangle shaped through holes 244 and 245 , but the shapes of the through holes 244 and 245 are not limited thereto and may have various shapes.

[0074] In this way, since the frame has a truss structure, the rigidity of the pack case 200 can be ensured.

[0075] Reference Figure 1 , Figure 4 and Figure 5 , the insertion member 300 may be inserted into the battery pack case 200, for example, into the barrier frame 240 of the battery pack case 200. The insertion member 300 may be made of a material that melts at a preset temperature.

[0076] As described above, if a thermal event occurs in the battery cells 110 within the battery module 100 , thermal energy may be trapped between the battery modules 100 , causing internal pressure to increase rapidly.

[0077] like Figure 1 As shown, if the space between one barrier frame 240 and an adjacent barrier frame 240 is so narrow that there is not enough free volume to serve as a buffer space, when a thermal event occurs, flames or gases cannot move to the free volume, resulting in an increase in internal pressure, which may cause the battery pack 10 to explode.

[0078] To prevent this, the battery pack 10 of the first embodiment of the present disclosure has a structure in which the through holes 244 and 245 are respectively formed in the first frame 241 and the second frame 242 as described above, and the insertion member 300 is inserted between the first frame 241 and the second frame 242 .

[0079] Here, as described above, the insertion member 300 may be made of a material that melts at a preset temperature. When a thermal event occurs in the battery cell 110 and the temperature rises due to a flame or the like, the insertion member 300 melts at a preset temperature. Also, if the insertion member 300 melts, the flame or gas may move outward through the through holes (the first through hole 244 and the second through hole 245) of the first frame 241 and the second frame 242.

[0080] As the insertion member 300 melts, the insertion member 300 communicates with adjacent spaces through the through holes 244 and 245 of the first and second frames 241 and 242 , thereby increasing a free volume in which flame or gas can move, thereby preventing pressure inside the battery pack 10 from increasing.

[0081] If flames or the like move laterally immediately after a thermal event occurs inside the battery pack 10, the flames or the like may have a negative impact on adjacent batteries, so the insert member 300 blocks the movement of flames in the early stages of the thermal event. Furthermore, when the insert member 300 melts over time, since the flames or gases are sufficiently discharged (e.g., discharged upward), it is more advantageous that the insert member 300 is removed by high temperature and a free volume is ensured.

[0082] That is, in the early stage of a fire in any battery module 100 within the battery pack 10, the insert member 300 prevents the fire from moving to the adjacent battery module 100. Also, if the fire or gas is exhausted over time, the insert member 300 melts due to the high temperature, securing a free volume, thereby preventing the pressure within the battery pack 10 from increasing.

[0083] Here, the melting temperature of the insertion member 300 may vary according to the configuration of the battery pack 10. That is, for example, the melting temperature of the insertion member 300 may vary according to the specification or model of the battery pack 10, and the specific melting temperature may be determined through experiments or the like.

[0084] To this end, the insertion member 300 may be made of various materials. For example, the insertion member 300 may be made of a silicone pad. Alternatively, as another embodiment, the insertion member 300 may be made of a mica pad. The silicone pad and the mica pad may be selected according to the ignition temperature of the battery cells 110 stacked in the battery module 100 or the temperature generated due to the flame. Here, since mica is a refractory material that melts at a higher temperature than a silicone pad, a mica pad may be used as the insertion member 300 in a specification or model that generates a high-temperature flame.

[0085] In an improved embodiment, the insert member 300 may be a fire extinguishing agent pad having a fire extinguishing material. For example, the fire extinguishing material may be filled inside the insert member 300. Here, when the insert member 300 is melted by the flame through the through holes 244 and 245 of the first frame 241 and the second frame 242, the fire extinguishing material inside the insert member 300 flows out and extinguishes the flame. In addition, when the insert member 300 is melted, the free volume can be ensured, thereby having the effect of reducing the internal pressure of the battery pack 10.

[0086] Here, there may be various fire extinguishing materials, including but not limited to Novec.

[0087] Figure 8 is a perspective view showing a battery pack according to a second embodiment of the present disclosure, Fig. 9 yes Figure 8 An enlarged view of part B of Fig.10 is along Figure 8 A cross-sectional view taken along line C-C' in which some parts are omitted.

[0088] Reference Figure 8 The second embodiment of the present disclosure is different in structure from the first embodiment in that it includes a discharge path member 400. However, the common features described in the first embodiment are replaced by the above description of the first embodiment. In addition, the features in the second embodiment that are applicable to the first embodiment can be applied to the first embodiment.

[0089] Reference Figure 8 The exhaust path member 400 is spaced apart from the battery module 100 to cover at least a portion of the battery module 100 and provide an exhaust path for flames or gases. The exhaust path member 400 can be configured in a variety of ways. For example, Figure 8As shown, a plurality of exhaust path members 400 may be provided, and the plurality of exhaust path members 400 a , 400 b , and 400 c may be spaced apart from each other by a preset gap 500 .

[0090] In addition, refer to Figure 8 and Fig. 9 , a plurality of exhaust path members 400a, 400b, and 400c are arranged to be spaced apart from each other to cover the battery module 100. Figure 8 , three exhaust path members 400a, 400b, and 400c cover the battery module 100, but the number of the exhaust path members 400 is not limited thereto and may vary.

[0091] As described in the first embodiment, the battery pack case 200 may be configured to include, for example, a lower frame 210, a side frame 220, an inner frame 230, a barrier frame 240, and an upper frame 250. The detailed description thereof is replaced by the above description.

[0092] In addition, a plurality of exhaust path members 400a, 400b, and 400c may be coupled to the side frame 220 and the barrier frame 240. Fig.10 As shown, a space 600 may be formed between the upper frame 250 and each of the plurality of exhaust path members 400 a , 400 b , and 400 c .

[0093] For example, if a thermal event occurs in the battery cells 110 within the battery module 100, flames or gases may move upward through the gaps 500 between the plurality of exhaust path members 400a, 400b, and 400c (eg, between two adjacent exhaust path members 400a and 400b arranged close to each other).

[0094] In addition, flame or gas having moved upward through the gaps 500 between the plurality of exhaust path members 400a, 400b, and 400c may be exhausted in a preset direction through the space 600 between the upper frame 250 and the exhaust path member 400. Here, the space 600 between the upper frame 250 and the exhaust path member 400 may provide a passage for flame or gas movement.

[0095] If flame or gas moves through the space 600 between the upper frame 250 and the exhaust path member 400 in this manner, the flame or gas may be prevented from flowing back into the battery module 100 where a thermal event occurs.

[0096] For example, if only the upper frame 250 is provided without the exhaust path member 400, the flame or gas generated during the thermal event may move upward, hit the upper frame 250 and be reflected therefrom, causing the flame or gas to flow back into the battery module 100 where the thermal event occurred. If the flame or gas flows back into the battery module 100 in this way, the module will catch fire faster and the risk of explosion will increase.

[0097] However, in the battery pack 10 of the second embodiment of the present disclosure, since the exhaust path member 400 is provided at the lower side of the upper frame 250, even if the flame or gas hits the upper frame 250 and is reflected, the flame or gas is blocked by the exhaust path member 400, thereby preventing the flame or gas from flowing back into the battery module 100. In addition, this has the effect of reducing the explosion risk of the battery module 100 in which a thermal event occurs.

[0098] Fig.11 is a diagram for illustrating a vehicle including the battery pack 10 according to each embodiment of the present disclosure.

[0099] Reference Fig.11 The vehicle 20 of one embodiment of the present disclosure may include one or more battery packs 10 according to the above-described embodiments. Here, the vehicle 20 includes various vehicles designed to use electric power, such as an electric vehicle or a hybrid electric vehicle.

[0100] The terms indicating directions such as up, down, left and right used in this document are only for convenience of description. These terms are only for ease of interpretation, and it is obvious to those skilled in the art that these terms may change depending on the position of the elements described or the position of the observer.

[0101] The present disclosure has been described in detail. However, it should be understood that the detailed description and specific examples, although indicating preferred embodiments of the present disclosure, are given only as examples, because various changes and modifications within the scope of the present disclosure are obvious to those skilled in the art based on the detailed description. Therefore, the previously disclosed embodiments should be considered from the perspective of interpretation rather than limitation. In other words, the scope of the true technical idea of ​​the present disclosure is shown in the claims, and all differences within the equivalent range should be interpreted as included in the present disclosure.

[0102] Industrial Applicability

[0103] The present disclosure relates to a battery pack and a vehicle including the battery pack, and is particularly applicable to industries related to secondary batteries.

Claims

1. A battery pack, comprising: a plurality of battery modules in which a plurality of battery cells are stacked; a battery pack case configured to accommodate the plurality of battery modules and having a through hole formed in at least a portion thereof; and An insertion member is inserted into the battery pack case.

2. The battery pack according to claim 1, in, At least a portion of the battery pack housing is configured as a double frame structure, the double frame structure comprising: First Framework; and a second frame, the second frame being arranged in parallel with the first frame and spaced apart from the first frame by a preset gap, The insertion member is inserted into the gap between the first frame and the second frame.

3. The battery pack according to claim 2, in, Each of the first frame and the second frame is configured as a truss structure formed with the through hole.

4. The battery pack according to claim 3, in, The truss structure comprises: a rim portion configured to form a rim; and A connecting portion is configured to connect the edge portions to form the through hole.

5. The battery pack according to claim 3, in, The insert member is made of a material that melts at a preset temperature.

6. The battery pack according to claim 5, in, The insert member is made of a silicone pad.

7. The battery pack according to claim 1, in, The insert member is made of mica mat.

8. The battery pack according to claim 1, in, The insert member is a fire extinguishing agent pad having a fire extinguishing material.

9. The battery pack according to claim 8, in, The fire extinguishing material includes Novick.

10. The battery pack according to claim 1, further comprising: An exhaust path member is spaced apart from the battery module to cover at least a portion of the battery module and is configured to provide an exhaust path for flame or gas.

11. The battery pack according to claim 10, in, The exhaust path member is provided in plurality, and the plurality of exhaust path members are spaced apart at a preset gap to cover the battery module.

12. The battery pack according to claim 11, in, The battery pack housing comprises: a lower frame, the plurality of battery modules being arranged on the lower frame; a side frame extending upward from an edge of the lower frame; an inner frame extending upward from an interior of the lower frame and coupled to the side frames; a barrier frame coupled to the inner frame and interposed between the plurality of battery modules; and an upper frame, the upper frame being connected to the side frame, Wherein, the plurality of discharge path members are coupled with the side frame and the barrier frame.

13. The battery pack according to claim 12, in, The plurality of exhaust path members are configured such that the flame or the gas moves upward through gaps between the plurality of exhaust path members.

14. The battery pack according to claim 13, in, A space is formed between the upper frame and the exhaust path member, and the flame or the gas is exhausted in a preset direction through the space.

15. A vehicle comprising the battery pack according to any one of claims 1 to 14.

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