Battery pack and vehicle including the same

Abstract

Disclosed are a battery pack and a vehicle including the same. A battery pack according to one embodiment of the present invention comprises: a plurality of battery modules, each of which is formed of a plurality of stacked battery cells; a pack case in which a plurality of battery modules are accommodated; and a blocking cover for covering at least some of the battery modules so as to be opened in a preset direction by flame or gas.

Description

Technical Field

[0001] This application claims priority from Korean Patent Application No. 10-2023-0090610 filed in Korea on Jul. 12, 2023, the disclosure of which is incorporated herein by reference.

[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 the spread of flame or gas and a vehicle including the same. Background Art

[0003] With the technological development and increasing demand for mobile devices, the 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 recently, lithium secondary batteries have become widely used because they have almost no memory effect compared to nickel-based secondary batteries and thus have advantages such as free charge and discharge, very low self-discharge rate, and high energy density.

[0004] These lithium secondary batteries mainly use lithium-based oxides and carbon materials as positive 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 a positive electrode active material and a negative electrode active material, respectively, are arranged with a separator between the positive electrode plate and the negative electrode plate; and an exterior material (i.e., a battery case) that seals and houses the electrode assembly and the electrolyte.

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

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

[0007] Various types of secondary batteries include a battery module having a case for protecting battery cells, in which a plurality of battery cells are stacked and inserted into the case, and a battery pack in which a plurality of battery modules are accommodated.

[0008] Here, when a flame occurs in at least one battery cell within the battery module housing, if the flame leaks out of the battery module housing, the flame may spread to other battery modules, and the flame may also expose a user to a dangerous situation.

[0009] For example, when a battery module or a battery pack is installed in an electric vehicle, if a flame is generated in a battery cell and the flame leaks, a driver driving the electric vehicle may be burned or fall into a dangerous situation.

[0010] Alternatively, if a flame generated in a battery module spreads to other adjacent battery modules in this manner, the battery module or battery pack could be damaged, burned, or exploded due to a chain reaction of flames, thus posing a problem in ensuring the stability of the battery module or battery pack. Furthermore, gas is also generated from the battery cells within the battery modules, so if this gas is discharged in an unintended direction, various problems may arise. Summary of the Invention

[0011] Technical issues

[0012] Therefore, the present disclosure relates to providing a battery pack and a vehicle including the battery pack that can discharge flames or gases generated in any one battery module due to fire in the battery cells inside the corresponding battery module in a preset direction to prevent the flame from spreading to adjacent battery modules, thereby ensuring the stability of the battery modules.

[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 housing configured to accommodate the plurality of battery modules; and a blocking cover configured to cover at least a portion of the battery modules so as to be opened in a preset direction due to flame or gas.

[0015] In an 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 interposed between the plurality of battery modules; and an upper frame separated from the inner frame and connected to the side frame, and a blocking cover may be mounted on the barrier frame.

[0016] In an embodiment, the blocking cover may include a first blocking portion located at an upper side; and a second blocking portion bent and extended from the first blocking portion.

[0017] In an embodiment, the second blocking portion may be positioned to be spaced apart from the inner frame.

[0018] In an embodiment, a protrusion may be formed at an upper side of the barrier frame, a groove may be formed in the first blocking portion of the blocking cover, and the protrusion of the barrier frame may be removably fitted into the groove of the first blocking portion.

[0019] In an embodiment, as the groove of the first blocking part is separated from the protrusion of the barrier frame due to flame or gas, the blocking cover may be opened by being rotated between the upper frame and the inner frame.

[0020] In an embodiment, the blocking cover may be formed in an L-shape.

[0021] In an embodiment, the first barrier portion may include a central portion configured to cover the battery module; and wing portions located at both ends of the central portion and spaced apart from the central portion.

[0022] In an embodiment, when flame or gas occurs, the center portion of the first blocking portion may be opened upward by the flame or gas.

[0023] In an embodiment, the first blocking portion and the second blocking portion may be formed in an integral form, and the cutting portion may be formed between a central portion and the wing portions of the first blocking portion.

[0024] In an embodiment, the barrier cap may be made of mica.

[0025] In an embodiment, the battery pack may further include a flame and gas guide passage member coupled to the battery module to guide flame or gas discharged in a preset direction when the blocking cover is opened.

[0026] In an embodiment, the flame and gas guide passage member may have a hollow portion formed therein, and the flame or gas may be discharged through the hollow portion inside the flame and gas guide passage member.

[0027] In an embodiment, the side frame may have a hollow shape, and the flame and gas guide passage member may communicate with the side frame, and the flame or gas may move from the flame and gas guide passage member to the side frame and be discharged.

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

[0029] Beneficial effects

[0030] The embodiments of the present disclosure have the effect of discharging flame or gas generated in any one battery module due to fire of battery cells inside the corresponding battery module in a preset direction to prevent the flame from propagating to adjacent battery modules.

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

[0032] In addition, the present disclosure has the effects of allowing easy assembly and reducing costs by eliminating fastening members. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0034] Figure 2 It is shown that the Figure 1 Cross-sectional view of a battery module in a battery pack.

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

[0036] Figure 4 is a partial plan view showing a battery pack according to a first embodiment of the present disclosure.

[0037] Figure 5 is a diagram illustrating that a battery module is separated from a blocking cover in a battery pack according to a first embodiment of the present disclosure.

[0038] Figure 6 is a diagram illustrating the interior of a blocking cover in a battery pack according to a first embodiment of the present disclosure.

[0039] Figure 7 is a perspective view illustrating a blocking cover in a battery pack according to a first embodiment of the present disclosure.

[0040] Figure 8 and Figure 9 is a diagram for illustrating a process in which a barrier cover is opened due to flame or gas so that the flame or gas is discharged in the battery pack according to the first embodiment of the present disclosure.

[0041] Figure 10 are diagrams illustrating a blocking cover and a battery module in a battery pack according to a second embodiment of the present disclosure, and include partially enlarged views.

[0042] Figure 11 is a perspective view illustrating a blocking cover in a battery pack according to a second embodiment of the present disclosure.

[0043] Figure 12 is a diagram for illustrating a process in which a barrier cover is opened due to flame or gas so that the flame or gas is discharged in a battery pack according to a second embodiment of the present disclosure.

[0044] Figure 13 is a diagram for illustrating a process in which a barrier cover is opened due to flame or gas so that the flame or gas is discharged in a battery pack according to a third embodiment of the present disclosure.

[0045] Figure 14 is a diagram for illustrating a vehicle including a battery pack according to each embodiment of the present disclosure. DETAILED DESCRIPTION

[0046] Hereinafter, 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 meaning and dictionary meaning, but should be interpreted based on the meaning and concept corresponding to the technical aspects of the present disclosure on the basis of the principle that the inventor is allowed to appropriately define the terms for the best interpretation. Therefore, the descriptions provided herein are only preferred examples for illustrative purposes and are not intended to limit the scope of the present disclosure. Therefore, it should be understood that other equivalent replacements and modifications may be made thereto without departing from the scope of the present disclosure.

[0047] In the accompanying drawings, for the sake of convenience and clarity of description, the size of each component or a specific part constituting the component is exaggerated, omitted, or schematically illustrated. 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 key points of the present disclosure, such description will be omitted.

[0048] 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 to a case where one member is indirectly coupled or indirectly connected to another member by joining members.

[0049] Figure 1 is a partially exploded perspective view showing a battery pack according to a first embodiment of the present disclosure, Figure 2 It is shown that the Figure 1 A cross-sectional view of a battery module in a battery pack, Figure 3 It shows Figure 1 An enlarged view of part A of Figure 4 is a partial plan view showing a battery pack according to a first embodiment of the present disclosure, Figure 5 is a diagram showing that a battery module is separated from a blocking cover in a battery pack according to a first embodiment of the present disclosure, Figure 6 is a diagram showing the interior of a blocking cover in a battery pack according to a first embodiment of the present disclosure, Figure 7 is a perspective view showing a blocking cover in a battery pack according to a first embodiment of the present disclosure, and Figure 8 and Figure 9 is a diagram for illustrating a process in which a barrier cover is opened due to flame or gas so that the flame or gas is discharged in the battery pack according to the first embodiment of the present disclosure.

[0050] Reference Figure 1 , the battery pack 10 according to the first embodiment of the present disclosure may include a plurality of battery modules 100 , a pack case 200 , and a blocking cover 300 .

[0051] A plurality of battery modules 100 are provided and arranged in various ways. For example, Figure 1As shown, the plurality of battery modules 100 may be arranged horizontally and vertically, but is not limited thereto.

[0052] Reference Figure 2 , the battery module 100 may include a plurality of battery cells 110 and a module housing 120 .

[0053] The plurality of battery cells 110 may be stacked on each other. The battery cell 110 may have various structures, and the plurality of battery cells 110 may be stacked in various ways.

[0054] The battery cell 110 can be configured as a structure in which a plurality of unit cells (in which positive plates, separators and negative plates are arranged in sequence) or a plurality of bicells (in which positive plates, separators, negative plates, separators, positive plates, separators and negative plates are arranged in sequence) are stacked according to the battery capacity.

[0055] The battery cell 110 may have electrode leads. An 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 leads may include a positive electrode lead and a negative electrode lead.

[0056] The positive lead and the negative lead may be disposed on opposite sides with respect to the longitudinal direction of the battery cell 110 , or the positive lead and the negative lead may be located on the same side with respect to the longitudinal direction of the battery cell 110 .

[0057] In addition, the battery cell 110 may have a plurality of boxes (not shown) for accommodating the battery cells 110. Each box (not shown) may be manufactured by plastic injection molding, and a plurality of boxes (not shown) each having a storage portion capable of storing the battery cells 110 may be stacked. The box assembly having the plurality of stacked boxes (not shown) may have a connector element or a terminal element.

[0058] The connector element may include, for example, various types of electrical connection components or members for connection with a BMS (Battery Management System) (not shown) capable of providing data on the voltage or temperature, etc., of the battery cells 110 .

[0059] 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 to electrically connect to an external structure. In addition, the battery cell 110 may have various shapes.

[0060] Reference Figure 2 , the 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.

[0061] The module housing 120 may be formed in a shape corresponding to the shape of a stack formed by stacking a plurality of battery cells 110. For example, if the stack formed by stacking a plurality of battery cells 110 has a hexahedron shape, the module housing 120 may also be formed in a hexahedron shape corresponding to the stack. 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.

[0062] 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 a single piece. If the module housing 120 is manufactured as a single piece, the connection process can be simplified and facilitated. Alternatively, the module housing 120 can be configured as a separate type and connected by welding or the like. However, the material of the module housing 120 is not limited to metal.

[0063] Reference Figure 1 , the plurality of battery modules 100 are accommodated in a pack case 200. The pack case 200 may include, for example, a lower frame 210, side frames 220, an inner frame 230, a barrier frame 240, and an upper frame 250.

[0064] 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.

[0065] The side frames 220 may be configured to extend upward from the edges of the lower frame 210. The side frames 220 define the height of the battery pack housing 200 and form a predetermined space between the side frames 220 and the lower frame 210. Furthermore, a plurality of battery modules 100 are positioned in the space between the side frames 220 and the lower frame 210. The side frames 220 may include relatively long long-side side frames 220a and relatively short short-side side frames 220b.

[0066] The inner frame 230 extends upward from the inner side of the lower frame 210 and is coupled to the side frame 220. 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. The inner frame 230 is arranged in the same direction as the short side frames 220b.

[0067] The barrier frame 240 is coupled to the inner frame 230. Here, the barrier frame 240 is arranged in the same direction as the long side frame 220a. In addition, the barrier frame 240 is interposed between the plurality of battery modules 100. Figure 1 In the embodiment, one barrier frame 240 is provided between two adjacent battery modules 100, but the present invention is not limited thereto. Figure 1 and Figure 3, the blocking cover 300 is installed on the barrier frame 240 .

[0068] The upper frame 250 is separated from the inner frame 230 and coupled to the side frame 220. Figure 8 , a preset gap is formed between the upper frame 250 and the inner frame 230. In addition, a preset gap is also formed between the upper frame 250 and the barrier frame 240. As will be explained in detail later, flames or gas can be discharged through the gap between the upper frame 250 and the barrier frame 240.

[0069] The blocking cover 300 covers at least a portion of the battery module 100 to be opened in a predetermined direction by flame or gas. When the blocking cover 300 is opened by flame or gas, the flame or gas may be discharged in a predetermined direction through the open space of the blocking cover 300.

[0070] Reference Figures 3 to 5 , the blocking cover 300 is mounted on the barrier frame 240. Here, the blocking cover 300 is mounted on the barrier frame 240 without a fastening member. As will be explained later, the protrusion 241 of the barrier frame 240 is mounted by being detachably inserted into the groove 311 of the first blocking portion 310 of the blocking cover 300 without a fastening member, which facilitates assembly and reduces costs.

[0071] Reference Figure 6 and Figure 7 , the blocking cover 300 may include a first blocking portion 310 and a second blocking portion 320. The first blocking portion 310 is located above the second blocking portion 320 and is as shown in FIG. Figure 3 The blocking cover 300 covers at least a portion of the battery module 100. Here, the blocking cover 300 may be located at an upper side of the bus bar, and a fireproof cover (not shown) blocking the bus bar may be provided at a lower side of the blocking cover 300.

[0072] The second barrier portion 320 is bent and extended from the first barrier portion 310. The second barrier portion 320 may be bent at an angle of 90 degrees from the first barrier portion 310 and disposed between the inner frame 230 and the battery module 100. Figure 8 At this time, the second barrier portion 320 is positioned to be spaced apart from the inner frame 230. In addition, the 90-degree bending angle between the second barrier portion 320 and the first barrier portion 310 is only one embodiment and is not limited thereto.

[0073] Reference Figure 1 and Figure 8 , a protrusion 241 is formed on the upper side of the barrier frame 240. In addition, referring to Figure 7 , a groove 311 is formed in the first blocking portion 310 of the blocking cover 300. In addition, as Figure 3As shown, the protrusion 241 of the barrier frame 240 is removably inserted into the groove 311 of the first blocking portion 310 .

[0074] Here, when flame or gas is generated inside the battery cell 110, as shown in FIG. Figure 9 As shown, the blocking cover 300 rotates upward due to the flame or gas, and the groove 311 of the first blocking portion 310 is separated from the protrusion 241 of the barrier frame 240. In other words, if the groove 311 of the first blocking portion 310 is separated from the protrusion 241 of the barrier frame 240, the blocking cover 300 rotates between the upper frame 250 and the inner frame 230 to be opened, and the flame or gas can be discharged through the open gap of the blocking cover 300 between the upper frame 250 and the barrier frame 240 (see FIG. Figure 9 (arrow in the middle).

[0075] As mentioned above, refer to Figure 8 Since the second blocking portion 320 is positioned to be spaced apart from the inner frame 230 and the first blocking portion 310 is positioned to be spaced apart from the upper frame 250 , the blocking cover 300 may rotate between the upper frame 250 and the inner frame 230 due to flame or gas.

[0076] In other words, if the blocking cover 300 is rotated due to flame or gas, the upper frame 250 and the inner frame 230 serve as a kind of stopper, so that the blocking cover 300 can be rotated only within a preset range. Figure 9 To explain this, when the blocking cover 300 rotates, the first blocking portion 310 collides with the upper frame 250 and the second blocking portion 320 collides with the inner frame 230, thereby preventing further rotation. Therefore, the blocking cover 300 can only rotate within a preset range.

[0077] Reference Figure 1 and Figure 9 , if the blocking cover 300 is opened due to flame or gas as described above, the direction of the open gap of the blocking cover 300 is the direction of the battery module 100 in which the flame or gas is generated.

[0078] That is, for example, if the first battery module 100a (see Figure 1 ), if flame or gas occurs in the first battery module 100a, an open gap of the blocking cover 300 is formed in a direction toward the first battery module 100a, so that the flame or gas generated in the first battery module 100a is discharged only to the first battery module 100a and is not discharged to the other battery modules 100 where no flame occurs.

[0079] Thus, when the battery cells 110 in any battery module 100 catch fire, causing flames or gas to be generated in the corresponding battery module 100, the flames or gas can be discharged in a preset direction (towards the corresponding battery module in which the flames or gas are generated), and thus the present disclosure has the effect of preventing the flames or gas from spreading to adjacent battery modules 100.

[0080] In addition, the blocking cover 300 may be formed in various shapes, for example, Figure 8 The blocking cover 300 is shown in an L-shape, but the shape of the blocking cover 300 is not limited thereto.

[0081] The blocking cover 300 may be made of various materials, such as mica as a refractory material, but the material of the blocking cover 300 is not limited thereto.

[0082] Figure 10 is a diagram showing a blocking cover and a battery module in a battery pack according to a second embodiment of the present disclosure, and includes a partially enlarged view, Figure 11 is a perspective view showing a blocking cover in a battery pack according to a second embodiment of the present disclosure, and Figure 12 is a diagram for illustrating a process in which a barrier cover is opened due to flame or gas so that the flame or gas is discharged in a battery pack according to a second embodiment of the present disclosure.

[0083] Since the first blocking portion 310 is not separated in the first embodiment, the second embodiment differs from the first embodiment in that a portion of the first blocking portion 310 is separated. Here, the features that are the same as those of the first embodiment will not be described in detail. Furthermore, the features of the second embodiment that are applicable to the first embodiment can also be applied to the first embodiment.

[0084] Reference Figure 10 and Figure 11 The first barrier portion 310 may include a center portion 312 and wing portions 313. The center portion 312 covers the battery module 100 and is located at the center. Here, the center should be understood as including not only the exact center but also a position close to the center. The wing portions 313 are located at both ends of the center portion 312 and are separated from the center portion 312.

[0085] Reference Figure 10 In the partially enlarged view, a thin gap is formed between the center portion 312 and the wing portions 313 by cutting, thereby separating the center portion 312 and the wing portions 313 from each other. In other words, a cutout portion 314 is formed between the center portion 312 and the wing portions 313 of the first barrier portion 310. At this point, the first barrier portion 310 and the second barrier portion 320 are formed in an integrated form. In other words, only the center portion 312 and the wing portions 313 of the first barrier portion 310 are separated from each other.

[0086] In addition, refer to Figure 10 and Figure 11 , two wings 313 a and 313 b are provided at the inner and outer sides, and the wings 313 a at the inner sides of the two first blocking parts 310 a and 310 b overlap each other and are installed at the protrusion 241 of the barrier frame 240 .

[0087] In addition, when flame or gas is generated in the battery module 100, the central portion 312 of the first barrier portion 310 is opened upward due to the flame or gas, as shown in FIG. Figure 12 As shown. That is, in the first embodiment, the entire first barrier portion 310 rotates and opens, but in the second embodiment, only the center portion 312 of the first barrier portion 310 changes its shape and opens. At this time, the wing portions 313 of the first barrier portion 310 remain coupled to the protrusions 241 of the barrier frame 240. That is, the wing portions 313 maintain their original positions, and the center portion 312 is lifted upward by the cutout portion 314 and changes its shape. In addition, flames or gas can be discharged through the open gap in the center portion 312 between the upper frame 250 and the barrier frame 240 (see Figure 12 (arrow in the middle).

[0088] Figure 13 is a diagram for illustrating a process in which a barrier cover is opened due to flame or gas so that the flame or gas is discharged in a battery pack according to a third embodiment of the present disclosure.

[0089] The third embodiment of the present disclosure differs from the first or second embodiment in that a flame gas guide passage member 400 is provided. Features identical to those of the first or second embodiment will not be described in detail herein. However, features of the third embodiment applicable to the first or second embodiment may also be applied to the first or second embodiment.

[0090] Reference Figure 13 , the flame gas guide passage member 400 is coupled to the battery module 100 to guide the flame or gas discharged in a preset direction when the blocking cover 300 is opened. Figure 13 The flame and gas guide passage member 400 has a hollow portion 410 formed therein. Furthermore, when flame or gas is generated in any one of the battery modules 100 , the flame or gas is discharged through the hollow portion 410 inside the flame and gas guide passage member 400 .

[0091] To this end, the flame gas guide passage member 400 may be installed near the first blocking portion 310 of the blocking cover 300. In other words, if the first blocking portion 310 is opened and flame or gas is discharged through the open gap of the first blocking portion 310, the flame or gas moves to the flame gas guide passage member 400 installed near the first blocking portion 310 and is discharged through the hollow portion 410 inside the flame gas guide passage member 400 (see FIG. Figure 13 This allows the flame or gas to be discharged precisely in a pre-set direction.

[0092] exist Figure 13 In the embodiment, the flame gas guide passage member 400 is provided for the second embodiment, but the flame gas guide passage member 400 may be provided for the first embodiment.

[0093] In addition, although not shown in the drawings, in a modified embodiment, the interior of the side frame 220 may be formed into a hollow shape. In addition, the flame and gas guide channel member 400 is communicated with the side frame 220, and the flame or gas can move from the flame and gas guide channel member 400 to the interior of the side frame 220 and be discharged.

[0094] Alternatively, the interior of at least one of the lower frame 210, the side frame 220, the inner frame 230, the barrier frame 240 and the upper frame 250 of the battery pack housing 200 is formed into a hollow shape and is connected to the flame and gas guide channel member 400 to serve as a flow path through which flame or gas can move.

[0095] Figure 14 is a diagram for illustrating a vehicle including a battery pack according to each embodiment of the present disclosure.

[0096] Reference Figure 14 The vehicle 20 according to one embodiment of the present disclosure may include one or more battery packs 10 according to each of 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.

[0097] When terms indicating directions such as up, down, left, and right are used herein for convenience of description only, these terms are for convenience of explanation only, and it is obvious to those skilled in the art that these terms may change depending on the position of the elements or observers.

[0098] The present disclosure has been described in detail. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the present disclosure, are given by way of illustration only, as various changes and modifications within the scope of the present disclosure will become apparent to those skilled in the art based on this detailed description. Therefore, the previously disclosed embodiments should be considered from an illustrative perspective rather than a restrictive perspective. In other words, the scope of the true technical concept of the present disclosure is shown in the claims, and all differences within the scope of equivalents should be interpreted as being included in the present disclosure.

[0099] Industrial Applicability

[0100] The present disclosure relates to a battery pack and a vehicle including the same, and in particular, can be used in industries related to secondary batteries.

Claims

1. A battery pack, comprising: a plurality of battery modules, wherein a plurality of battery cells are stacked in the plurality of battery modules; a battery pack housing configured to accommodate the plurality of battery modules; as well as The blocking cover is configured to cover at least a portion of the battery module so as to be opened in a predetermined direction due to flame or gas.

2. The battery pack according to claim 1, in, The battery pack housing comprises: a lower frame, the plurality of battery modules being mounted on the lower frame; a side frame extending upward from an edge of the lower frame; an inner frame extending upward from an inner side 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 spaced apart from the inner frame and coupled to the side frames, Wherein, the blocking cover is installed on the barrier frame.

3. The battery pack according to claim 2, in, The blocking cover comprises: a first blocking portion located at an upper side; and The second blocking portion is bent and extended from the first blocking portion.

4. The battery pack according to claim 3, in, The second blocking portion is positioned to be spaced apart from the inner frame.

5. The battery pack according to claim 4, in, A protrusion is formed at an upper side of the barrier frame, wherein a groove is formed in the first blocking portion of the blocking cover, and The protrusion of the barrier frame is detachably fitted into the groove of the first blocking portion.

6. The battery pack according to claim 5, in, As the groove of the first blocking portion is separated from the protrusion of the barrier frame due to the flame or the gas, the blocking cover is opened by being rotated between the upper frame and the inner frame.

7. The battery pack according to claim 3, in, The blocking cover is formed in an L shape.

8. The battery pack according to claim 3, in, The first blocking portion includes: a center portion configured to cover the battery module; and The wing portions are located at both ends of the central portion and are separated from the central portion.

9. The battery pack according to claim 8, in, When the flame or the gas appears, the center portion of the first blocking portion opens upward due to the flame or the gas.

10. The battery pack according to claim 8, in, The first blocking portion and the second blocking portion are formed in an integral form, and A cutout portion is formed between the central portion and the wing portion of the first blocking portion.

11. The battery pack according to claim 1, in, The blocking cover is made of mica.

12. The battery pack according to claim 2, further comprising: A flame and gas guide passage member is coupled to the battery module to guide the flame or the gas discharged in the preset direction when the blocking cover is opened.

13. The battery pack according to claim 12, in, The flame gas guide passage member has a hollow portion formed therein, and the flame or the gas is discharged through the hollow portion inside the flame gas guide passage member.

14. The battery pack according to claim 13, in, The side frame has a hollow shape, and The flame and gas guide passage member is in communication with the side frame, and the flame or the gas moves from the flame and gas guide passage member to the side frame and is discharged. 15 . A vehicle comprising the battery pack according to claim 1 .

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