Battery pack and vehicle including the same

Abstract

A battery pack according to one embodiment of the present invention comprises: a plurality of batteries; a battery pack tray having an internal space for accommodating the plurality of batteries and an opening communicating with the internal space; a pack cover configured to engage with the pack tray and cover the opening; and a heat dissipation structure disposed between the plurality of batteries and the battery pack cover, in which the heat dissipation structure includes: a first contact portion in thermal contact with at least one of the plurality of batteries, and a second contact portion in thermal contact with at least one of the plurality of batteries; and a second contact portion spaced apart from the first contact portion by a predetermined distance and in thermal contact with the pack cover.

Description

Technical Field

[0001] This application claims priority to Korean Patent Application No. 10-2022-0183585 filed on December 23, 2022 and Korean Patent Application No. 10-2023-0041543 filed on March 29, 2023, the disclosures of which are 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 having a plurality of battery cells capable of being charged and discharged and a vehicle including the same. 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, as such secondary batteries have been applied to devices requiring high output voltage and large charging capacity, such as electric vehicles or energy storage systems (ESS), battery modules configured by connecting a plurality of battery cells in series, in parallel, or in a combination of series and parallel, and battery packs configured by connecting battery modules in series, in parallel, or in a combination of series and parallel have become widely used.

[0005] Therefore, since battery cells or battery modules included in a battery pack are densely placed in a narrow space to increase energy density, they should be properly managed to avoid overheating or thermal runaway.

[0006] However, when manufacturing a battery pack, the prior art accommodates a plurality of battery cells or a plurality of battery modules in a box-shaped battery pack tray having an opening at the top, and closes the opening of the battery pack tray with a cover having a simple plate structure, so that the heat generated inside the battery pack accumulates inside the battery pack, causing problems such as overheating or thermal runaway of the battery cells or battery modules.

[0007] Furthermore, in this prior art, the cover of the battery pack is directly exposed to high-temperature gases and flames generated during thermal runaway of battery cells or battery modules contained in the battery pack, so that heat transfer develops rapidly due to heat accumulated in the exposed cover portion, leading to chain thermal runaway of other battery cells or other battery modules, and further causing fire or explosion of the battery pack. Summary of the invention

[0008] Technical issues

[0009] The present disclosure is intended to solve the problems of the related art, and therefore the present disclosure is intended to provide a battery pack and a vehicle including the battery pack, which prevent overheating or thermal runaway of batteries accommodated in the battery pack and suppress or delay chain thermal runaway between batteries or fire of the battery pack.

[0010] Technical Solution

[0011] A battery pack according to one aspect of the present disclosure includes: a plurality of batteries; a battery pack tray having an internal space for accommodating the plurality of batteries and an opening connected to the internal space; a battery pack cover, the battery pack cover being configured to be coupled to the battery pack tray to cover the opening; and a heat dissipation structure disposed between the plurality of batteries and the battery pack cover, wherein the heat dissipation structure includes a first contact portion and a second contact portion, the first contact portion being in thermal contact with at least one of the plurality of batteries, and the second contact portion being spaced apart from the first contact portion by a predetermined distance and in thermal contact with the battery pack cover.

[0012] In one embodiment, the heat dissipation structure may further include at least one connection leg configured to have one end connected to the first contact portion and the other end connected to the second contact portion to maintain a gap between the first contact portion and the second contact portion.

[0013] In one embodiment, the heat dissipation structure may include a plurality of first contact portions and a plurality of second contact portions, respectively.

[0014] In one embodiment, the plurality of first contact portions of the heat dissipation structure may be spaced apart from each other at intervals, and each first contact portion may be configured to be in thermal contact with at least one of the plurality of batteries.

[0015] In one embodiment, the plurality of second contact portions of the heat dissipation structure may be spaced apart from each other at intervals, and each second contact portion may be configured to be in thermal contact with a different portion of the battery pack cover.

[0016] In one embodiment, a plurality of first contact portions of the heat dissipation structure may be spaced apart from each other in a grid shape on a first plane, and a plurality of second contact portions of the heat dissipation structure may be spaced apart from each other in a grid shape on a second plane parallel to the first plane.

[0017] In one embodiment, the plurality of first contact portions and the plurality of second contact portions may be alternately disposed based on a first direction parallel to the first plane or the second plane.

[0018] In one embodiment, the heat dissipation structure may include a plurality of connection legs integrally connecting the plurality of first contact portions and the plurality of second contact portions.

[0019] In one embodiment, each of the plurality of batteries may have a contact surface that contacts at least one of the plurality of first contact portions of the heat dissipation structure, and an exhaust portion for exhausting gas may be provided on a portion of the contact surface other than a portion that contacts the at least one first contact portion.

[0020] In one embodiment, each of the plurality of batteries may include: a plurality of battery cells that can be charged and discharged; and a battery case having a contact surface provided with a vent portion and accommodating the plurality of battery cells therein.

[0021] In one embodiment, the heat dissipation structure may be made of a material having a higher thermal conductivity than the battery pack cover.

[0022] In one embodiment, the battery pack tray may include a wall forming an internal space, wherein the wall may include at least one gas inlet and at least one gas channel, the at least one gas inlet is connected to the space between the first contact portion and the second contact portion and is configured so that gas generated from a battery contained in the internal space is introduced, and the at least one gas channel is connected to the at least one gas inlet.

[0023] A vehicle according to another aspect of the present disclosure includes the battery pack according to any one of the above-described embodiments.

[0024] Beneficial Effects

[0025] According to the present disclosure, a heat dissipation structure is located between a plurality of batteries contained in a battery pack tray and a battery pack cover to dissipate heat generated from the plurality of batteries, thereby preventing overheating or thermal runaway of the batteries contained in the battery pack, suppressing or delaying chain thermal runaway between the batteries or fire of the battery pack, and improving the safety of the battery pack.

[0026] In addition, the heat dissipation structure includes a first contact portion that contacts at least one of the multiple batteries and a second contact portion that is spaced apart from the first contact portion by a predetermined distance and contacts the battery pack cover. The heat dissipation structure has a relatively larger surface area than a simple plate structure, thereby increasing the cooling speed of the battery and improving the heat dissipation efficiency.

[0027] Furthermore, since the heat dissipation structure is configured as a geometric three-dimensional structure that provides a gas discharge space between the battery and the pack cover, it is possible to facilitate designing a discharge path for gas or flame generated from the battery.

[0028] In addition, those skilled in the art to which the present disclosure pertains will readily understand through the following description that several technical problems not mentioned above may be solved according to various embodiments of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is an exploded perspective view showing a battery pack according to an embodiment of the present disclosure.

[0030] Figure 2 It is shown Figure 1 A view of the heat dissipation structure of the battery pack is shown.

[0031] Figure 3 yes Figure 2 A cross-sectional view of the heat dissipation structure shown.

[0032] Figure 4 It is shown Figure 1 A view of the heat dissipation structure of the battery pack is shown.

[0033] Figure 5 is along Figure 1 A cross-sectional view taken along line S1-S1' in FIG.

[0034] Figure 6 is a view showing batteries included in a battery pack according to an embodiment of the present disclosure.

[0035] Figure 7 It is shown Figure 6 Magnified view of area A1 in FIG.

[0036] Figure 8 is along Figure 7 A cross-sectional view taken along line S2-S2' in FIG.

[0037] Fig. 9 It is shown Figure 8 A view of the exhaust section shown in its open state.

[0038] Fig.10 is a view showing a vehicle according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0039] Below, an embodiment according to the present disclosure will be described in detail with reference to the accompanying drawings in order to clarify the technical solution corresponding to the technical problem of the present disclosure. However, if the description of the related known technology obscures the main points of the present disclosure when describing the present disclosure, its description may be omitted. In addition, the terms used in this specification are defined in consideration of the functions in the present disclosure, which may vary according to the intentions or habits of designers, manufacturers, etc. Therefore, the definitions of the terms to be described below should be based on the contents throughout this specification.

[0040] exist Figure 1 , a battery pack 100 according to an embodiment of the present disclosure is shown in an exploded perspective view.

[0041] like Figure 1As shown, the battery pack 100 according to an embodiment of the present disclosure includes a battery 110 , a battery pack tray 120 , a battery pack cover 130 , and a heat dissipation structure 140 .

[0042] The battery 110 may be configured as a battery module. As will be described again below, when the battery 110 is implemented as a battery module, the battery 110 may include a plurality of battery cells as basic units of charge / discharge and a battery case accommodating the plurality of battery cells.

[0043] In one embodiment, the battery 110 may also be implemented as a pouch-type, cylindrical or square battery cell. In this case, the battery 110 may be manufactured by accommodating an electrode assembly and an electrolyte material in a pouch-type, cylindrical or square housing, in which the positive electrode and the negative electrode are stacked and a separator is located therebetween, and then sealing the housing.

[0044] The battery pack tray 120 is configured to accommodate one or at least two batteries 110. To this end, the battery pack tray 120 may have an internal space accommodating one or at least two batteries 110 and an opening communicating with the internal space. For example, the battery pack tray 120 is configured in a box shape having an opening at the top, and may accommodate a plurality of batteries 110 in its internal space.

[0045] In one embodiment, the battery pack tray 110 may include a wall 122 forming an internal space. On one surface of the wall 122 adjacent to the internal space, at least one gas inlet 124 may be provided, through which gas generated from the battery 110 is introduced. In addition, inside the wall 122, at least one gas channel communicating with the at least one gas inlet 124 may be provided. In this case, a gas outlet 126 for discharging the gas moving through the gas channel to the outside may be provided on the outer surface of the battery pack tray 120.

[0046] In addition, the battery pack tray 120 may further include a crossbeam 128, which divides the internal space into a plurality of mutually independent receiving spaces. In this case, at least one battery 110 may be accommodated in each receiving space. In addition, a gas inlet 124 may be provided in each receiving space.

[0047] In one embodiment, the battery pack tray 120 may also accommodate various electrical components (not shown) that control charging / discharging operations of the battery 110 accommodated in the internal space or monitor the state of charge (SOC), state of health (SOH), etc.

[0048] The pack cover 130 is configured to be coupled to the above-mentioned pack tray 120 and cover the top opening of the pack tray 120. The pack cover 130 may be coupled to the pack tray 120 using a fastening member such as a screw or various methods such as welding or adhesion.

[0049] The heat dissipation structure 140 is disposed between the plurality of batteries 110 and the battery pack cover 130, and is configured to dissipate heat generated from the plurality of batteries 110. To this end, the heat dissipation structure 140 may be made of a metal material having high thermal conductivity. In particular, the heat dissipation structure 140 may be made of a material having a higher thermal conductivity than the battery pack cover 130. For example, the battery pack cover 130 may be made of stainless steel, and the heat dissipation structure 140 may be made of a material including aluminum.

[0050] Furthermore, the heat dissipation structure 140 may be configured to be in thermal contact with the battery 110 and the pack cover 130 , respectively, to quickly disperse and release heat generated from the battery 110 throughout the pack cover 130 .

[0051] In one embodiment, the heat dissipation structure 140 may be configured in the form of a plate or sheet to be coupled to the bottom surface of the pack cover 130. In this case, the pack cover 130 may have a multi-layer structure in which the heat dissipation structure is integrally coupled to the bottom surface thereof.

[0052] In another embodiment, the heat dissipation structure 140 may be configured as a geometric three-dimensional structure.

[0053] exist Figure 2 In the Figure 1 The heat dissipation structure 140 of the battery pack is shown.

[0054] like Figure 2 As shown, the heat dissipation structure 140 may include a first contact portion 142 and a second contact portion 144 .

[0055] The first contact portion 142 may be configured to thermally contact at least one of the plurality of batteries 110 accommodated in the battery pack tray 120. To this end, the first contact portion 142 may have a plate structure.

[0056] The second contact portion 144 may be spaced apart from the first contact portion 142 by a predetermined distance to have a step difference from the first contact portion 142, and may be configured to thermally contact the battery pack cover 130. To this end, the second contact portion 144 may have a plate structure.

[0057] In addition, the heat dissipation structure 140 may further include at least one connection leg 146. The connection leg 146 may be configured to have one end connected to the first contact portion 142 and the other end connected to the second contact portion 144 to maintain a gap between the first contact portion 142 and the second contact portion 144.

[0058] In one embodiment, the heat dissipation structure 140 may include a plurality of the first contact portion 142 and the second contact portion 144 .

[0059] For example, the plurality of first contact portions 142 may be spaced apart from each other at intervals, and each first contact portion may be configured to thermally contact at least one of the plurality of batteries 110. In this case, the plurality of first contact portions 142 may be spaced apart from each other in a grid shape on a virtual first plane.

[0060] In addition, the plurality of second contact portions 144 may be spaced apart from each other at intervals, and each second contact portion may be configured to thermally contact a different portion of the battery pack cover 130. In this case, the plurality of second contact portions 144 may be spaced apart from each other in a grid shape on a virtual second plane parallel to the first plane.

[0061] The plurality of first contact portions 142 and the plurality of second contact portions 144 may be alternately disposed based on a first direction (eg, an X-axis direction or a Y-axis direction) parallel to the first plane or the second plane.

[0062] exist Figure 3 In Figure 2 FIG. 1 is a cross-sectional view of the heat dissipation structure 140 shown in FIG.

[0063] like Figure 3 As shown, the heat dissipation structure 140 may include a plurality of first contact portions 142 and a plurality of second contact portions 144 .

[0064] The plurality of first contact portions 142 may be disposed at positions spaced apart from each other on the virtual first plane P1. In this case, the first plane P1 may be a plane corresponding to a contact surface of the battery 110 with which each of the first contact portions 142 contacts.

[0065] The plurality of second contact portions 144 may be disposed at positions spaced apart from each other on a virtual second plane P2 parallel to the first plane P1. In this case, the second plane P2 may be a plane corresponding to the bottom surface of the battery pack cover 130 contacting each second contact portion 144.

[0066] The plurality of first contact portions 142 and the plurality of second contact portions 144 may be alternately disposed based on a first direction (eg, a Y-axis direction) parallel to the first plane P1 or the second plane P2.

[0067] Furthermore, the heat dissipation structure 140 may include a plurality of connection legs 146 integrally connecting the plurality of first contact portions 142 and the plurality of second contact portions 144 .

[0068] exist Figure 4 In the Figure 1 The heat dissipation structure of the battery pack is shown.

[0069] like Figure 4 As shown, the heat dissipation structure 140 may be disposed between a top surface of the battery 110 accommodated in the pack tray 120 and the pack cover 130 covering an opening of the pack tray 120 .

[0070] The heat dissipation structure 140 can prevent heat from accumulating in a portion of the battery pack cover 130 by quickly dispersing the heat generated from the battery accommodated in the battery pack tray 120 throughout the battery pack cover 130 and cooling it. In addition, the heat generated from the battery 110 can be cooled while being transferred through the first contact portion 142, the connecting leg 146, and the second contact portion 144 of the heat dissipation structure 140, thereby improving the cooling performance of the battery pack 100. Therefore, thermal runaway of the battery or chain thermal runaway between batteries can be suppressed or delayed, and ignition of the battery pack can be prevented.

[0071] exist Figure 5 In the figure, it is shown that Figure 1 A cross-sectional view taken along line S1-S1' in FIG.

[0072] like Figure 5 As shown, the heat dissipation structure 140 may be disposed between the top surface of the battery 110 accommodated in the battery pack tray 120 and the battery pack cover 130 covering the opening of the battery pack tray 120 to provide a discharge path for the exhaust gas VG generated in the battery 110. That is, the exhaust gas VG generated in the battery 110 may be discharged by moving through the space between the first contact portion 142 and the second contact portion 144 disposed in the heat dissipation structure 140.

[0073] To this end, the wall 122 of the battery pack tray 120 may have at least one gas inlet 124 disposed in a portion of one surface of the wall 122 adjacent to the inner space of the battery pack tray 120 , between the first contact portion 142 and the second contact portion 144 of the heat dissipation structure 140 .

[0074] That is, the gas inlet 124 may be configured to communicate with the space between the first contact portion 142 and the second contact portion 144 of the heat dissipation structure 140. Therefore, the exhaust gas VG generated in the battery 110 may move through the space between the first contact portion 142 and the second contact portion 144 of the heat dissipation structure 140 and flow into the gas inlet 124 of the wall 122.

[0075] In addition, the wall 122 may have a gas passage 124a provided therein and communicating with the gas inlet 124. Exhaust gas VG introduced through the gas inlet 124 may move through the gas passage 124a and be discharged to the outside through a gas outlet 126 provided on an outer surface of the battery pack tray 120.

[0076] In this way, the heat dissipation structure 140 having a geometric three-dimensional structure may be disposed between the battery 110 and the battery pack cover 130 to provide a gas exhaust path, thereby facilitating designing an exhaust path for gas or flame generated from the battery pack.

[0077] exist Figure 6 , a battery 110 included in a battery pack according to an embodiment of the present disclosure is shown.

[0078] like Figure 6 As shown, the battery 110 may have a contact surface F1 contacting at least one of the plurality of first contact portions 142 of the heat dissipation structure 140. In addition, a gas exhaust portion 114 for exhausting gas may be provided in a portion of the contact surface F1 other than the portion contacting the first contact portion 142.

[0079] The battery 110 may be implemented as a battery module including a plurality of battery cells as a basic unit of charge / discharge and a battery case 112 accommodating the plurality of battery cells.

[0080] In this case, the battery case 112 has a contact surface F1 provided with a vent portion 114 and may be configured to accommodate a plurality of battery cells therein. On an outer surface of the battery case 112, terminals T1, T2 electrically connected to the battery cells accommodated in the inner space may be provided.

[0081] exist Figure 7 In the enlarged view, Figure 6 Area A1 in .

[0082] like Figure 7 As shown, at least one vent portion 114 may be provided on the contact surface F1 of the battery case 112. The vent portion 114 may have a cover portion 114a and at least one support portion 114b.

[0083] The cover portion 114a may be configured to separate from the rest of the contact surface F1 when the internal pressure of the battery 110 increases above a predetermined pressure. When the cover portion 114a separates from the contact surface F1, an opening communicating with the internal space of the battery case 112 may be formed in the contact surface F1.

[0084] The support portion 114b may be configured such that one end thereof is integrally connected to the other portion of the contact surface F1 except the cover portion 114a, and the other end thereof is integrally connected to the cover portion 114a. The support portion 114b may support the cover portion 114a so that the cover portion 114a separated from the contact surface F1 maintains a specific position.

[0085] The vent portion 114 may be provided by forming a notch or a cut line on the contact surface F1 of the battery 110 .

[0086] exist Figure 8 In the figure, it is shown that Figure 7 A cross-sectional view taken along line S2-S2' in FIG.

[0087] like Figure 8 As shown, the battery case 112 may have a multi-layer structure. That is, the battery case 112 may include a case frame 112a and a vent cover 112b.

[0088] The case frame 112 a constitutes a main body of the battery case 112 , and may have a vent hole VH provided on one surface corresponding to the contact surface F1 .

[0089] The exhaust hole cover 112b may be attached to the outer surface of the case frame 112a and configured to cover the exhaust hole VH. In this case, the above-mentioned exhaust portion 114 may be provided in the exhaust hole cover 112b.

[0090] For example, in a normal state where no gas is generated inside the battery 110, the cover portion 114a of the exhaust portion 114 covers and closes the opening of the exhaust hole VH of the housing frame 112a. To this end, the cover portion 114a of the exhaust portion 114 may have an area equal to or larger than the opening area of ​​the exhaust hole VH.

[0091] Fig. 9 Shows Figure 8 The exhaust portion 114 is shown in an open state.

[0092] like Fig. 9 As shown, when gas is generated inside the battery 110, the cover portion 114a of the vent portion 114 may be separated from the rest of the vent hole cover 112b by the pressure of the gas to open the vent hole VH of the case frame 112a.

[0093] In this case, the support portion 114b of the exhaust portion 114 may support the cover portion 114a separated from the exhaust hole cover 112b to maintain the cover portion 114a at a specific position.

[0094] For reference, if the cover portion 114a is completely separated from the vent cover 112b by the pressure of the exhaust, the fragments of the separated cover portion 114a may cause various problems inside the battery pack. To prevent this problem, the support portion 114b can support the cover portion 114a so that the cover portion 114a is not completely separated from the vent cover 112b.

[0095] Therefore, the vent cover 112b having the vent portion 114 can cover the vent hole VH of the housing frame 112a, thereby quickly discharging the gas generated inside the battery 110 to the outside of the battery 110 while preventing foreign matter from penetrating into the battery module. As a result, the heat energy accumulated in the battery 110 can be minimized to delay the heat propagation time and prevent chain thermal runaway or fire of other batteries accommodated in the battery pack 100.

[0096] In one embodiment, the vent cover 112b may be configured in the form of a sheet of a flexible material to surround at least two of the multiple surfaces of the housing frame 112a and be attached to the housing frame 112a. Therefore, while reducing the weight of the battery 110 and simplifying the manufacturing process, the entire vent cover 112b can be prevented from being separated from the housing frame 112a by the gas pressure of the battery 110.

[0097] exist Fig.10 , a vehicle 10 according to an embodiment of the present disclosure is shown.

[0098] like Fig.10 As shown, the vehicle 10 according to the embodiment of the present disclosure may include the battery pack 100 according to the above-mentioned various embodiments. In this case, the battery pack 100 may provide electric energy required for various operations of the vehicle 10.

[0099] For reference, of course, the battery pack 100 according to the present disclosure may be applied to various electrical devices or electrical systems in addition to vehicles, and may also be applied to an energy storage system (ESS).

[0100] As described above, according to the present disclosure, a heat dissipation structure is located between a plurality of batteries contained in a battery pack tray and a battery pack cover to dissipate heat generated from the plurality of batteries, thereby preventing overheating or thermal runaway of the batteries contained in the battery pack, suppressing or delaying chain thermal runaway between batteries or fire of the battery pack, and improving the safety of the battery pack.

[0101] In addition, the heat dissipation structure includes a first contact portion that contacts at least one of the multiple batteries and a second contact portion that is spaced apart from the first contact portion by a predetermined distance and contacts the battery pack cover. The heat dissipation structure has a relatively larger surface area than a simple plate structure, thereby increasing the cooling speed of the battery and improving the heat dissipation efficiency.

[0102] Furthermore, since the heat dissipation structure is configured as a geometric three-dimensional structure that provides a gas discharge space between the battery and the pack cover, it is possible to facilitate designing a discharge path for gas or flame generated from the battery.

[0103] Furthermore, of course, the embodiments according to the present disclosure can in fact solve various other technical problems in the relevant technical fields and the related technical fields except for the technical problems mentioned in the present specification.

[0104] The present disclosure has been described above 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 from an illustrative perspective rather than a restrictive perspective. That is, 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 included in the present disclosure.

Claims

1. A battery pack, the battery pack include: Multiple batteries; a battery pack tray having an inner space for accommodating the plurality of batteries and an opening communicating with the inner space; a battery pack cover configured to be coupled to the battery pack tray to cover the opening; as well as a heat dissipation structure, the heat dissipation structure being disposed between the plurality of batteries and the battery pack cover, Wherein, the heat dissipation structure comprises: a first contact portion in thermal contact with at least one of the plurality of batteries; and A second contact portion is spaced apart from the first contact portion by a predetermined distance and is in thermal contact with the battery pack cover.

2. The battery pack according to claim 1, in, The heat dissipation structure further includes at least one connection leg configured to have one end connected to the first contact portion and the other end connected to the second contact portion to maintain a gap between the first contact portion and the second contact portion.

3. The battery pack according to claim 1, in, The heat dissipation structure includes a plurality of the first contact portions and a plurality of the second contact portions.

4. The battery pack according to claim 3, in, The plurality of first contact portions of the heat dissipation structure are spaced apart from each other at intervals, and each of the first contact portions is configured to be in thermal contact with at least one of the plurality of batteries.

5. The battery pack according to claim 3, in, The plurality of second contact portions of the heat dissipation structure are spaced apart from each other at intervals, and each of the second contact portions is configured to be in thermal contact with a different portion of the battery pack cover.

6. The battery pack according to claim 3, in, The plurality of first contact portions of the heat dissipation structure are arranged in a grid shape and spaced apart from each other on a first plane, and The plurality of second contact portions of the heat dissipation structure are arranged in a grid shape and spaced apart from each other on a second plane parallel to the first plane.

7. The battery pack according to claim 6, in, The plurality of first contact portions and the plurality of second contact portions are alternately arranged based on a first direction parallel to the first plane or the second plane.

8. The battery pack according to claim 3, in, The heat dissipation structure includes a plurality of connection legs integrally connecting the plurality of first contact portions and the plurality of second contact portions.

9. The battery pack according to claim 3, in, Each of the plurality of batteries has a contact surface that contacts at least one of the plurality of first contact portions of the heat dissipation structure, and a gas exhaust portion for exhausting gas is provided on a portion of the contact surface other than a portion that contacts the at least one first contact portion.

10. The battery pack according to claim 9, in, Each of the plurality of batteries comprises: a plurality of battery cells capable of being charged and discharged; and A battery case has the contact surface provided with the vent portion and accommodates the plurality of battery cells therein.

11. The battery pack according to claim 1, in, The heat dissipation structure is made of a material having a higher thermal conductivity than the battery pack cover.

12. The battery pack according to claim 1, in, The battery pack tray includes walls forming the interior space, Wherein, the wall comprises: at least one gas inlet communicating with a space between the first contact portion and the second contact portion and configured to allow gas generated from a battery accommodated in the internal space to be introduced; and At least one gas channel is in communication with the at least one gas inlet.

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

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