Battery pack

Abstract

The present invention discloses a battery pack. A battery pack according to one embodiment of the present invention includes a base plate, a battery assembly including a case provided on the upper surface of the base plate and a plurality of battery cells located inside the case, a partition wall provided on the upper surface of the base plate, and a heat-resistant member provided on one side of the partition wall.

Description

Technical Field

[0001] The present invention relates to a battery pack.

[0002] This application claims priority based on Korean Patent Application No. 10-2024-0031933 filed on March 6, 2024, and all the contents disclosed in the specification and drawings of the said application are incorporated into this application.

Background Art

[0003] As the demand for portable electronic products such as laptops, video cameras, and mobile phones has rapidly increased, and as the commercialization of robots, electric vehicles, etc. has been in full swing, research on high-performance secondary batteries that can be repeatedly charged and discharged has been actively conducted.

[0004] Currently, commercially available secondary batteries include nickel-cadmium batteries, nickel-metal hydride batteries, nickel-zinc batteries, lithium secondary batteries, etc. Among these, lithium secondary batteries have attracted attention because they can be freely charged and discharged with almost no memory effect compared to nickel-based secondary batteries, have a very low self-discharge rate, and have a high energy density.

[0005] Such lithium secondary batteries mainly use a lithium-based oxide and a carbon material as a positive electrode active material and a negative electrode active material, respectively. A lithium secondary battery includes an electrode assembly in which a positive electrode plate coated with such a positive electrode active material and a negative electrode plate coated with a negative electrode active material are arranged with a separator interposed therebetween, and an exterior material that hermetically stores the electrode assembly together with an electrolytic solution, for example, a battery case.

[0006] Generally, lithium secondary batteries can be divided into a can-type secondary battery in which an electrode assembly is stored in a metal can and a pouch-type secondary battery in which an electrode assembly is stored in a pouch made of an aluminum laminate sheet according to the shape of the exterior material.

[0007] In recent years, secondary batteries have been widely used not only in small devices such as portable electronic devices, but also in medium and large-scale devices such as electric vehicles and energy storage systems (ESS), for propulsion and energy storage. These secondary batteries are electrically connected and housed together inside a module case to form a single battery module. Furthermore, multiple such battery modules are connected to form a single battery pack.

[0008] However, when multiple secondary batteries (battery cells) or multiple battery modules are densely packed into a small space, they can be vulnerable to thermal events. In particular, if an event such as thermal runaway occurs in one battery cell, high-temperature gases, flames, and heat may be generated. If such gases, flames, and heat are transferred to other battery cells contained within the same battery module, an explosive chain reaction such as thermal propagation can occur. Furthermore, such a chain reaction can not only cause accidents such as fires and explosions in the battery module in question, but can also cause fires and explosions in other battery modules.

[0009] Furthermore, in the case of medium to large battery packs, such as those found in electric vehicles, the risk of chain reactions is even higher because they contain a large number of battery cells and battery modules in an attempt to increase output and / or capacity. Moreover, in the case of battery packs installed in electric vehicles, there may be users such as drivers in the vicinity. Therefore, if a thermal event occurring in a particular battery cell or module cannot be properly controlled and a chain reaction occurs, it could lead to not only significant property damage but also loss of life. For this reason, it is necessary to improve the thermal safety of battery packs by properly controlling thermal events generated in battery cells and modules. [Overview of the Initiative] [Problems that the invention aims to solve]

[0010] The present invention aims to solve the problems described above and other problems.

[0011] Another object of the present invention is to provide a battery pack with improved safety when a thermal event occurs.

[0012] Another object of the present invention is to provide a battery pack that can suppress heat propagation through a partition wall equipped with a heat-resistant material when a thermal event occurs.

[0013] Another object of the present invention is to provide a battery pack having a structure that can improve rigidity while suppressing heat propagation. [Means for solving the problem]

[0014] To achieve the above objective, a battery pack according to one aspect of the present invention includes a base plate, a case provided on the upper surface of the base plate, a battery assembly including a plurality of battery cells located inside the case, a partition wall provided on the upper surface of the base plate, and a heat-resistant member provided on one side of the partition wall.

[0015] Furthermore, the partition wall provides an internal space, and the heat-resistant member can be placed in the internal space.

[0016] Furthermore, the partition wall includes a first plate and a second plate that is separated from the first plate and faces the first plate, and the heat-resistant member may be located between the first plate and the second plate.

[0017] Furthermore, the partition wall may further include a first part that connects the lower part of the first plate and the lower part of the second plate.

[0018] Further, the first part may extend long along the lower edge of the first plate and cover the lower edge of the heat-resistant member.

[0019] Further, the heat-resistant member may contact the upper surface of the base plate.

[0020] Further, the partition wall may further include a second part that connects the upper part of the first plate and the upper part of the second plate.

[0021] Further, the second part may extend long along the upper edge of the first plate and cover the upper edge of the heat-resistant member.

[0022] Further, the heat-resistant member includes a first heat-resistant member and a second heat-resistant member that are spaced apart from each other, the partition wall is located between the first heat-resistant member and the second heat-resistant member, and may further include a third part that connects the first plate and the second plate.

[0023] Further, the heat-resistant member may be configured to have a lower thermal conductivity than the partition wall.

[0024] Further, the heat-resistant member may include silicone or an aerogel material.

[0025] Further, the heat-resistant member may cover the outer surface of the partition wall.

[0026] Further, the heat-resistant member may entirely cover the outer surface of the partition wall.

[0027] Further, the battery pack may further include an adhesive member disposed between the heat-resistant member and the partition wall.

[0028] Further, the heat-resistant member may include a mica material.

[0029] An automobile according to another aspect of the present invention includes a battery pack according to an aspect of the present invention.

Effects of the Invention

[0030] According to one aspect of the present invention, the thermal safety of the battery pack can be improved.

[0031] According to one aspect of the present invention, heat propagation can be suppressed.

[0032] According to one aspect of the present invention, the rigidity of the battery pack can be improved.

[0033] The following drawings accompanying this specification illustrate preferred embodiments of the present invention and are intended to facilitate a better understanding of the technical concept of the invention, along with the detailed description of the invention. Therefore, the present invention is not to be construed as being limited solely to what is shown in the drawings. [Brief explanation of the drawing]

[0034] [Figure 1] This figure shows a battery pack according to one embodiment of the present invention. [Figure 2] This diagram shows a portion of the battery pack components separated from each other. [Figure 3] This diagram shows a portion of the battery assembly in Figure 2, separated into different parts. [Figure 4] This diagram shows a partial configuration of the battery pack shown in Figure 1. [Figure 5] This diagram shows a partition wall in a battery pack according to one embodiment of the present invention. [Figure 6] This diagram shows a partition wall in a battery pack according to one embodiment of the present invention. [Figure 7] This diagram shows a partition wall in a battery pack according to one embodiment of the present invention. [Figure 8] This figure shows a partition wall of a battery pack according to another embodiment of the present invention. [Figure 9] This figure shows a partition wall of a battery pack according to another embodiment of the present invention. [Figure 10]This figure shows a partition wall of a battery pack according to another embodiment of the present invention. [Figure 11] This figure shows a partition wall of a battery pack according to another embodiment of the present invention. [Figure 12] This figure shows a partition wall of a battery pack according to yet another embodiment of the present invention. [Figure 13] This figure shows a partition wall of a battery pack according to yet another embodiment of the present invention. [Figure 14] This figure shows a partition wall of a battery pack according to yet another embodiment of the present invention. [Figure 15] This figure shows a partition wall of a battery pack according to yet another embodiment of the present invention. [Figure 16] This figure shows yet another embodiment of the present invention: a partition wall of another battery pack. [Figure 17] This figure shows yet another embodiment of the present invention: a partition wall of another battery pack. [Figure 18] This figure shows yet another embodiment of the present invention: a partition wall of another battery pack. [Modes for carrying out the invention]

[0035] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. Prior to this, terms and words used in this specification and in the claims shall not be interpreted in a manner limited to their general and dictionary meanings, but in accordance with the principle that inventors themselves may appropriately define the concepts of terms in order to best describe their invention, and shall be interpreted in a manner and concept corresponding to the technical idea of ​​the present invention.

[0036] Therefore, the embodiments described herein and the configurations shown in the drawings represent only one of the most preferred embodiments of the present invention and do not represent the entire technical concept of the invention. It should be understood that there are various equivalents and modifications that can substitute for them at the time of this application.

[0037] Figure 1 shows a battery pack according to one embodiment of the present invention, Figure 2 shows a partial configuration of the battery pack in Figure 1 separated, Figure 3 shows a partial configuration of the battery assembly 200 in Figure 2 separated, and Figure 4 shows a partial configuration of the battery pack in Figure 1.

[0038] Referring to Figures 1 to 4, the base plate 110 may be rectangular in shape. The base plate 110 may be flat. The base plate 110 may form the exterior of the battery pack. The base plate 110 may provide the internal space of the battery pack.

[0039] Multiple battery assemblies 200 may be provided. The battery assemblies 200 may be installed, fastened, coupled, fixed, or attached to the upper surface of the base plate 110.

[0040] Multiple battery assemblies 200 may be provided. Each battery assembly 200 may include a module case 210, battery cells 220, end covers 230, and heat conduction members 240. The module case 210 may be rectangular parallelepiped. The module case 210 may have an open left and right side. The module case 210 may form the exterior of the battery assembly 200. The module case 210 may provide internal space.

[0041] The battery cell 220 can be housed inside the module case 210. Multiple battery cells 220 may be provided. In this case, the battery cell 220 may represent a secondary battery. The battery cell 220 may also be pouch-type. Multiple battery cells 220 may be stacked or arranged along the front-to-back direction.

[0042] The heat conduction member 240 may be located between the multiple battery cells 220 and the module case 210. The heat conduction member 240 may be located below the multiple battery cells 220. The heat conduction member 240 may be made of resin. The heat conduction member 240 may also fix the multiple battery cells 220 to the module case 210. The heat conduction member 240 may also transfer heat generated from the multiple battery cells 220 to the module case 210.

[0043] The end covers 230 may be provided in pairs. Each pair of end covers 230 may be coupled, fastened, fixed, or attached to the left and right sides of the module case 210, respectively. The end covers 230 may form the appearance of the battery assembly 200.

[0044] The partition wall 300 may include a first partition wall 301 and a second partition wall 302. Multiple partition walls 300 may be provided. The partition wall 300 may be installed, fastened, fixed, joined, or attached to the upper surface of the base plate 110. The partition wall 300 may partition the internal space of the battery pack. Battery assemblies 200 may be located in the spaces partitioned by the partition wall 300. In addition, the partition wall 300 may face at least one surface of the battery assembly 200.

[0045] The heat-resistant member 310 may be provided on at least one surface of the partition wall 300. The heat-resistant member 310 may be bonded, attached, fastened, coated, or fixed to the partition wall 300. The heat-resistant member 310 may include a heat-resistant material. The heat-resistant member 310 may also include a fire-resistant material. For example, the heat-resistant member 310 may include at least one of silicone material, aerogel material, or mica material. The heat-resistant member 310 may also include a thermally expanding material. This allows the heat-resistant member 310 to expand when a thermal event occurs. The heat-resistant member 310 may be configured as part of the partition wall 300. The heat-resistant member 310 may also be configured to have a thermal conductivity lower than that of the partition wall 300.

[0046] The term "heat-resistant member 310" can be used as a general term for the various heat-resistant members 310a, 310b, 310c, 310d, 311b, and 312b described later.

[0047] According to this configuration of the present invention, the thermal safety of the battery pack can be improved. By having a heat-resistant member 310 in the partition wall 300, heat propagation between battery assemblies 200 can be suppressed or blocked when a thermal event occurs.

[0048] Furthermore, according to this configuration of the present invention, the partition wall 300 can improve the structural rigidity of the base plate 110 or the battery pack.

[0049] Referring to Figures 1 to 4, a battery pack according to one embodiment of the present invention may include a side wall 120 and a pack cover 150.

[0050] The side walls 120 can be installed, fastened, joined, fixed, or attached to the upper surface of the base plate 110. Four side walls 120 may be provided. The side walls 120 may be arranged along the periphery of the base plate 110. The side walls 120 may form the exterior of the battery pack. The side walls 120 may provide internal space.

[0051] Battery assemblies 200, 201, 202, 203, and 204 may be surrounded by side walls 120.

[0052] The pack cover 150 may be rectangular or flat. The pack cover 150 may form the exterior of the battery pack. The pack cover 150 may cover the internal space of the battery pack. The pack cover 150 may be installed, fastened, coupled, fixed, or attached to the side wall 120. The pack cover 150 may also cover the top surfaces of the battery assemblies 200, 201, 202, 203, and 204.

[0053] Figures 5 to 7 show the partition wall 300a of a battery pack according to one embodiment of the present invention. Figure 5 shows the partition wall 300a and base plate 110 of the battery pack according to one embodiment of the present invention separated, Figure 6 shows the connection between the partition wall 300a and base plate 110 of Figure 5, and Figure 7 shows the cross-sectional configuration along the cutting line A-A' of Figure 6.

[0054] Referring to Figures 5 to 7, the partition wall 300a according to one embodiment of the present invention can provide an internal space. Furthermore, the heat-resistant member 310a can be placed in the internal space. In this case, the heat-resistant member 310a can be configured as a pad or a plate.

[0055] According to this configuration of the present invention, the thermal safety of the battery pack can be improved. By having a heat-resistant member 310a inside the partition wall 300a, heat propagation between battery assemblies 200 can be suppressed or blocked when a thermal event occurs.

[0056] Referring to Figures 5 to 7, a partition wall 300a according to one embodiment of the present invention may include a first plate 321a and a second plate 322a. The first plate 321a and the second plate 322a may each be rectangular in shape. The first plate 321a and the second plate 322a may form the appearance of the partition wall 300a. The first plate 321a and the second plate 322a may face each other. The first plate 321a and the second plate 322a may be spaced apart along the thickness direction of the partition wall 300a. The heat-resistant member 310a may be located between the first plate 321a and the second plate 322a. The heat-resistant member 310a may be bonded, fastened, attached, fixed, or coated to the first plate 321a or the second plate 322a.

[0057] According to this configuration of the present invention, the thermal safety of the battery pack can be improved. The first plate 321a and the second plate 322a can protect the heat-resistant member 310a from external heat and flames.

[0058] Referring to Figures 5 to 7, a partition wall 300a according to one embodiment of the present invention may include a first part 331a and a fastening member 160. The first part 331a can connect the lower part of the first plate 321a and the lower part of the second plate 322a. The fastening member 160 can penetrate the base plate 110 and at least a portion of it can be inserted into the first part 331a.

[0059] According to this configuration of the present invention, the thermal safety of the battery pack can be improved. Furthermore, the rigidity of the battery pack can be improved by fastening the base plate 110 and the partition wall 300a together.

[0060] Referring to Figures 5 to 7, the first part 331a of the partition wall 300a according to one embodiment of the present invention may extend along the lower edge of the first plate 321a or the lower edge of the second plate 322a. The first part 331a may also cover the lower edge or the lower surface of the heat-resistant member 310a. In this case, the upper edge or the upper surface of the heat-resistant member 310a may be exposed.

[0061] According to this configuration of the present invention, the thermal safety of the battery pack can be improved. In addition, the partition wall 300a can protect the heat-resistant member 310a from external heat and flames.

[0062] The following explanation will focus on the differences from the embodiments described above, and redundant explanations will be omitted.

[0063] Figures 8 to 11 show partition walls 300b of a battery pack according to other embodiments of the present invention. Figure 8 shows the partition wall 300b and base plate 110 of the battery pack according to another embodiment of the present invention separated, Figure 9 shows the connection between the partition wall 300b and base plate 110 of Figure 8, Figure 10 shows the cross-sectional configuration along the cutting line B-B' of Figure 9, and Figure 11 shows the cross-sectional configuration along the cutting line C-C' of Figure 9.

[0064] Referring to Figures 8 to 11, the heat-resistant member 310b of the partition wall 300b of the battery pack according to another embodiment of the present invention may be in contact with the upper surface of the base plate 110.

[0065] According to this configuration of the present invention, the thermal safety of the battery pack can be improved. By extending the heat-resistant member 310b until it contacts the upper surface of the base plate 110, the area or volume of the heat-resistant member 310b can be increased. This can improve the heat propagation suppression ability of the partition wall 300b.

[0066] Referring to Figures 8 to 11, the partition wall 300b of the battery pack according to another embodiment of the present invention may include a second part 332b. The second part 332b may connect the upper part of the first plate 321b to the upper part of the second plate 322b.

[0067] According to this configuration of the present invention, the thermal safety of the battery pack can be improved. In addition, the partition wall 300b can protect the heat-resistant member 310b from external heat and flames.

[0068] Referring to Figures 8 to 11, the second part 332b of the partition wall 300b of the battery pack according to another embodiment of the present invention may extend along the upper edge of the first plate 321b or the upper edge of the second plate 322b. The second part 332b may also cover the upper edge or upper surface of the heat-resistant member 310b.

[0069] According to this configuration of the present invention, the thermal safety of the battery pack can be improved. In addition, the partition wall 300b can protect the heat-resistant member 310b from external heat and flames.

[0070] Referring to Figures 8 to 11, the heat-resistant member 310b of the battery pack according to another embodiment of the present invention may consist of a first heat-resistant member 311b and a second heat-resistant member 312b. The first heat-resistant member 311b and the second heat-resistant member 312b may be spaced apart along the longitudinal direction of the partition wall 300b. Furthermore, the first heat-resistant member 311b and the second heat-resistant member 312b may be located between the first plate 321b and the second plate 322b.

[0071] Furthermore, the partition wall 300b may include a third part 333b. The third part 333b may be located between the first heat-resistant member 311b and the second heat-resistant member 312b. The third part 333b may also connect the first plate 321b and the second plate 322b. Furthermore, the third part 333b may extend in the height direction of the partition wall 300b. Furthermore, the third part 333b may contact, fix, connect to, or attach to the upper surface of the base plate 110.

[0072] According to this configuration of the present invention, the thermal safety of the battery pack can be improved. In addition, the bonding force between the base plate 110 and the partition wall 300b is increased, which can improve the rigidity of the battery pack.

[0073] Referring to Figures 8 to 11, the third part 333b of the partition wall 300b of the battery pack according to another embodiment of the present invention can be fastened to the base plate 110. In addition, the fastening member 160 can penetrate the base plate 110 and be inserted into the third part 333b, at least in part.

[0074] According to this configuration of the present invention, the thermal safety of the battery pack can be improved. Furthermore, the rigidity of the battery pack can be improved by fastening the base plate 110 and the partition wall 300b together.

[0075] Figures 12 to 15 show the partition wall 300c of a battery pack according to yet another embodiment of the present invention. Figure 12 shows the partition wall 300c and base plate 110 of the battery pack according to yet another embodiment of the present invention separated, Figure 13 shows the connection between the partition wall 300c and base plate 110 of Figure 12, Figure 14 shows the cross-sectional configuration along the cutting line D-D' of Figure 13, and Figure 15 shows the cross-sectional configuration along the cutting line E-E' of Figure 13.

[0076] Referring to Figures 12 to 15, the heat-resistant member 310c may be located between the first plate 321c and the second plate 322c. The first part 331c may connect the lower part of the first plate 321c and the lower part of the second plate 322c. Multiple first parts 331c may be provided. Multiple first parts 331c may be arranged along the longitudinal direction of the partition wall 300c. The heat-resistant member 310c may have a housing groove 311c in which the first part 331c is housed. The heat-resistant member 310c may be in contact with the upper surface of the base plate 110. In this case, the upper edge or the upper surface of the heat-resistant member 310c may be exposed. The first part 331c may also be in contact with, fixed to, joined to, or attached to the upper surface of the base plate 110. The fastening member 160 may penetrate the base plate 110 and at least a portion of it may be inserted into the first part 331c.

[0077] According to this configuration of the present invention, the thermal safety of the battery pack can be improved. Furthermore, the rigidity of the battery pack can be improved by fastening the base plate 110 and the partition wall 300c together.

[0078] Figures 16 to 18 show partition walls 300d of yet another embodiment of the present invention. Figure 16 is a diagram showing the partition wall 300d and base plate 110 of the battery pack according to yet another embodiment of the present invention separated, Figure 17 is a diagram showing the connection between the partition wall 300d and base plate 110 of Figure 16, and Figure 18 is a diagram showing the cross-sectional configuration along the cutting line F-F' of Figure 17.

[0079] Referring to Figures 16 to 18, the heat-resistant member 310d of the battery pack according to yet another embodiment of the present invention may cover the outer surface of the partition wall 300d. In this case, the heat-resistant member 310d may be positioned to face at least one surface of the battery assembly 200. In this case, the partition wall 300d may be formed integrally.

[0080] According to this configuration of the present invention, the thermal safety of the battery pack can be improved. In addition, the heat-resistant member 310d can protect the partition wall 300d from flames or heat.

[0081] Referring to Figures 16 to 18, the heat-resistant member 310d of the battery pack according to yet another embodiment of the present invention may cover the entire outer surface of the partition wall 300d. In this case, the heat-resistant member 310d may also be referred to as the cover 310d. The heat-resistant member 310d may be located between the partition wall 300d and the battery assembly 200. The heat-resistant member 310d may also cover the upper surface of the partition wall 300d. The partition wall 300d may also be in contact with, fixed to, joined to, or attached to the upper surface of the base plate 110. The fastening member 160 may penetrate the base plate 110 and at least a portion of it may be inserted into the partition wall 300d.

[0082] According to this configuration of the present invention, the thermal safety of the battery pack can be improved. Furthermore, the heat-resistant member 310d can protect the partition wall 300d from flames or heat. In addition, the rigidity of the battery pack can be improved by fastening the base plate 110 and the partition wall 300d together.

[0083] Referring to Figures 16 to 18, the heat-resistant member 310d of the battery pack according to yet another embodiment of the present invention can be attached to the partition wall 300d. Furthermore, an adhesive member can be placed between the heat-resistant member 310d and the partition wall 300d.

[0084] According to this configuration of the present invention, the thermal safety of the battery pack can be improved. The heat-resistant member 310d is stably bonded to the partition wall 300d, which can suppress or block heat propagation between the battery assemblies 200 when a thermal event occurs.

[0085] Furthermore, a battery pack according to one embodiment of the present invention may further include a variety of components, such as a battery management system (BMS), busbars, relays, current sensors, and other components of a battery pack known at the time of filing the present invention.

[0086] An automobile according to one embodiment of the present invention includes the battery pack according to the present embodiment of the present invention described above. The battery pack according to one embodiment of the present invention may be applied to automobiles such as electric vehicles and hybrid vehicles. Furthermore, an automobile according to one embodiment of the present invention may further include a variety of other components included in the automobile in addition to such a battery pack, such as a vehicle body, motors, and control devices such as an electronic control unit (ECU).

[0087] On the other hand, while terms indicating direction such as up, down, left, right, front, and back are used in this specification, these terms are used for convenience of explanation, and it is obvious to those skilled in the art that they can change depending on the position of the object being examined, the position of the observer, etc.

[0088] As described above, the present invention has been explained with limited embodiments and drawings, but it goes without saying that the present invention is not limited thereto, and that various modifications and variations are possible within the equivalent scope of the technical idea and claims of the present invention by persons with ordinary skill in the art to which the present invention pertains.

Claims

1. base plate and A battery assembly comprising a case provided on the upper surface of the base plate, and a plurality of battery cells located inside the case, The upper surface of the base plate is provided, and the side walls surrounding the battery assembly are provided, A pack cover provided on the side wall and covering the upper surface of the battery assembly, A partition wall provided on the upper surface of the base plate, The heat-resistant member provided on one side of the partition wall, The aforementioned partition wall provides an interior space, The heat-resistant member is arranged in the internal space, The aforementioned partition wall is The first plate and, A second plate is separated from the first plate and faces the first plate, and includes The heat-resistant member is located between the first plate and the second plate, The partition wall includes a first part that connects the lower part of the first plate and the lower part of the second plate. The plurality of the first parts are arranged along the longitudinal direction of the heat-resistant member, The heat-resistant member includes a housing groove in which the first part is housed, and is a battery pack.

2. The battery pack according to claim 1, wherein the heat-resistant member is in contact with the upper surface of the base plate.

3. A base plate and A battery assembly comprising a case provided on the upper surface of the base plate, and a plurality of battery cells located inside the case, The upper surface of the base plate is provided, and the side walls surrounding the battery assembly are provided, A pack cover provided on the side wall and covering the upper surface of the battery assembly, A partition wall provided on the upper surface of the base plate, The heat-resistant member provided on one side of the partition wall, The aforementioned partition wall provides an interior space, The heat-resistant member is arranged in the internal space, The aforementioned partition wall is The first plate and, A second plate is separated from the first plate and faces the first plate, and includes The heat-resistant member is located between the first plate and the second plate, The heat-resistant member includes a first heat-resistant member and a second heat-resistant member that are spaced apart from each other in the longitudinal direction of the heat-resistant member. The aforementioned partition wall is A battery pack further comprising a third part located between the first heat-resistant member and the second heat-resistant member, and connecting the first plate and the second plate.

4. The battery pack according to claim 1, wherein the heat-resistant member is configured to have a lower thermal conductivity than the thermal conductivity of the partition wall.

5. The battery pack according to claim 1, wherein the heat-resistant member comprises a silicone or aerogel material.

6. An automobile comprising a battery pack according to any one of claims 1 to 5.

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