Battery pack

Abstract

A battery pack is disclosed. The battery pack according to an embodiment of the present invention may comprise: a base plate; battery assemblies, each including a case installed on the upper surface of the base plate, and a plurality of battery cells positioned inside the case; partition walls installed on the upper surface of the base plate; and a heat-resistant member provided on one surface of each partition wall.

Description

battery pack

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

[0002] This application claims priority to Korean Patent Application No. 10-2024-0031933, filed on March 6, 2024, the entire contents of which are disclosed in the specification and drawings of which are incorporated herein by reference.

[0003] As demand for portable electronic products such as laptops, video cameras, and mobile phones rapidly increases and the commercialization of robots and electric vehicles becomes more widespread, research into high-performance secondary batteries capable of repeated charging and discharging is actively underway.

[0004] Currently commercialized secondary batteries include nickel-cadmium batteries, nickel-hydrogen batteries, nickel-zinc batteries, and lithium secondary batteries. Among these, lithium secondary batteries are receiving attention for their advantages of being able to charge and discharge freely, having a very low self-discharge rate, and having a high energy density, as they have almost no memory effect compared to nickel-based secondary batteries.

[0005] These lithium secondary batteries primarily use lithium oxide and carbon materials as the positive and negative electrode active materials, respectively. Lithium secondary batteries comprise an electrode assembly comprising positive and negative plates coated with the positive and negative electrode active materials, respectively, with a separator interposed between them, and an outer case, i.e., a battery case, that seals and encloses the electrode assembly together with an electrolyte.

[0006] In general, lithium secondary batteries can be classified into can-type secondary batteries in which the electrode assembly is built into a metal can and pouch-type secondary batteries in which the electrode assembly is built into a pouch of an aluminum laminate sheet, depending on the shape of the outer packaging material.

[0007] Recently, secondary batteries have been widely used for power and energy storage, not only in small devices like portable electronic devices but also in medium- to large-sized devices like electric vehicles and energy storage systems (ESS). Multiple secondary batteries can be electrically connected and housed within a module case to form a single battery module. Furthermore, multiple such battery modules can be connected to form a single battery pack.

[0008] However, when multiple secondary batteries (battery cells) or battery modules are densely packed in a confined space, they can be vulnerable to thermal events. Specifically, if a thermal runaway event occurs in a single battery cell, high-temperature gases, flames, and heat can be generated. If these gases, flames, or heat are transferred to other battery cells within the same battery module, an explosive chain reaction, such as thermal propagation, can occur. This chain reaction can not only cause a fire or explosion in the battery module in question, but can also trigger fires or explosions in other battery modules.

[0009] Moreover, for medium- to large-sized battery packs, such as those used in electric vehicles, the risk of thermal chain reactions can be even greater due to the inclusion of a large number of battery cells and battery modules to increase output and / or capacity. Furthermore, battery packs installed in electric vehicles may be surrounded by users, such as drivers. Therefore, if a thermal event occurring in a specific battery cell or module is not properly controlled and a chain reaction occurs, it can result in significant property damage and even human casualties. Therefore, it is necessary to appropriately control thermal events occurring in battery cells or modules to improve the thermal safety of battery packs.

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

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

[0012] Another object of the present invention may be to provide a battery pack capable of suppressing heat propagation through a partition wall having a heat-resistant member when a thermal event occurs.

[0013] Another object of the present invention may be to provide a battery pack having a structure capable of improving rigidity while suppressing heat propagation.

[0014] A battery pack according to one embodiment of the present invention may include a base plate; a battery assembly including a case installed on an upper surface of the base plate and a plurality of battery cells positioned inside the case; a partition wall installed on an upper surface of the base plate; and a heat-resistant member provided on one surface of the partition wall.

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

[0016] In addition, the partition wall includes a first plate; and a second plate spaced apart from the first plate and facing the first plate, and the heat-resistant member may be positioned between the first plate and the second plate.

[0017] Additionally, the partition wall may further include a first part connecting the lower portion of the first plate and the lower portion of the second plate.

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

[0019] Additionally, the heat-resistant member can be in contact with the upper surface of the base plate.

[0020] Additionally, the partition wall may further include a second part connecting the upper portion of the first plate and the upper portion of the second plate.

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

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

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

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

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

[0026] Additionally, the heat-resistant member can cover the entire outer surface of the partition wall.

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

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

[0029] A vehicle according to one aspect of the present invention comprises a battery pack of the present invention.

[0030] According to at least one of the embodiments of the present invention, the thermal safety of a battery pack can be improved.

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

[0032] According to at least one of the embodiments of the present invention, the rigidity of a battery pack can be improved.

[0033] The following drawings attached to this specification illustrate preferred embodiments of the present invention and, together with the detailed description of the invention described below, serve to further understand the technical idea of ​​the present invention, and therefore, the present invention should not be interpreted as being limited to matters described in such drawings.

[0034] FIG. 1 is a drawing showing a battery pack according to one embodiment of the present invention.

[0035] Fig. 2 is a diagram showing a partial configuration of the battery pack of Fig. 1 in isolation.

[0036] Fig. 3 is a drawing showing a part of the battery assembly of Fig. 2 in isolation.

[0037] Fig. 4 is a drawing showing a part of the configuration of the battery pack of Fig. 1.

[0038] FIGS. 5 to 7 are drawings showing a partition wall of a battery pack according to one embodiment of the present invention.

[0039] FIGS. 8 to 11 are drawings showing partition walls of a battery pack according to another embodiment of the present invention.

[0040] FIGS. 12 to 15 are drawings showing a partition wall of a battery pack according to another embodiment of the present invention.

[0041] FIGS. 16 to 18 are drawings showing partition walls of another battery pack according to another embodiment of the present invention.

[0042] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, it should be noted that the terms and words used in this specification and claims should not be construed as limited to their conventional or dictionary meanings. Based on the principle that the inventor can appropriately define the concepts of terms to best explain his or her invention, they should be interpreted in a way that aligns with the technical spirit of the present invention.

[0043] Accordingly, the embodiments described in this specification and the configurations illustrated in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention, and it should be understood that there may be various equivalents and modified examples that can replace them at the time of filing this application.

[0044] FIG. 1 is a drawing showing a battery pack according to one embodiment of the present invention. FIG. 2 is a drawing showing a partial configuration of the battery pack of FIG. 1 in isolation. FIG. 3 is a drawing showing a partial configuration of the battery assembly (200) of FIG. 2 in isolation. FIG. 4 is a drawing showing a partial configuration of the battery pack of FIG. 1.

[0045] Referring to FIGS. 1 to 4, the base plate (110) may have a square shape. The base plate (110) may have a flat shape. The base plate (110) may form the exterior of the battery pack. The base plate (110) may provide an internal space of the battery pack.

[0046] The battery assembly (200) may be provided in multiples. The battery assembly (200) may be installed, fastened, combined, fixed or attached to the upper surface of the base plate (110).

[0047] The battery assembly (200) may be provided in multiple units. Each battery assembly (200) may include a module case (210), a battery cell (220), an end cover (230), and a heat conducting member (240). The module case (210) may have a rectangular parallelepiped shape. The module case (210) may have an open left side and a right side. The module case (210) may form the exterior of the battery assembly (200). The module case (210) may provide a space therein.

[0048] The battery cell (220) may be accommodated inside the module case (210). The battery cell (220) may be provided in multiples. In this case, the battery cell (220) may refer to a secondary battery. In addition, the battery cell (220) may have a pouch shape. The plurality of battery cells (220) may be stacked or arranged in the front-back direction.

[0049] The thermally conductive member (240) may be positioned between the plurality of battery cells (220) and the module case (210). The thermally conductive member (240) may be positioned below the plurality of battery cells (220). The thermally conductive member (240) may be formed of resin. In addition, the thermally conductive member (240) may fix the plurality of battery cells (220) to the module case (210). In addition, the thermally conductive member (240) may transfer heat generated from the plurality of battery cells (220) to the module case (210).

[0050] The end covers (230) may be provided as a pair. The 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 exterior of the battery assembly (200).

[0051] The partition wall (300) may include a first partition wall (301) and a second partition wall (302). A plurality of partition walls (300) may be provided. The partition walls (300) may be installed, fastened, fixed, combined, or attached to the upper surface of the base plate (110). The partition walls (300) may partition the internal space of the battery pack. A battery assembly (200) may be positioned in each space partitioned by the partition walls (300). In addition, the partition walls (300) may face at least one surface of the battery assembly (200).

[0052] 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 coupled, attached, fastened, coated, or fixed to the partition wall (300). The heat-resistant member (310) may include a heat-resistant material. In addition, the heat-resistant member (310) may include a fire-resistant material. For example, the heat-resistant member (310) may include at least one of a silicone material, an aerogel material, and a mica material. In addition, the heat-resistant member (310) may include a thermal expansion material. Accordingly, the heat-resistant member (310) may expand when a thermal event occurs. The heat-resistant member (310) may be configured as a part of the partition wall (300). In addition, the heat-resistant member (310) may be configured to have a thermal conductivity lower than the thermal conductivity of the partition wall (300).

[0053] The heat-resistant member (310) may be used as a general term for heat-resistant members (310a, 310b, 310c, 310d, 311b, 312b) according to various embodiments described below.

[0054] According to this configuration of the present invention, the thermal safety of the battery pack can be improved. The partition wall (300) is provided with a heat-resistant member (310), thereby suppressing or blocking heat transmission between battery assemblies (200) when a thermal event occurs.

[0055] In addition, 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.

[0056] Referring to FIGS. 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).

[0057] The side wall (120) can be installed, fastened, joined, fixed, or attached to the upper surface of the base plate (110). The side wall (120) can be composed of four pieces. The side wall (120) can be arranged along the perimeter of the base plate (110). The side wall (120) can form the exterior of the battery pack. The side wall (120) can provide an internal space.

[0058] The battery assembly (200, 201, 202, 203, 204) may be surrounded by a side wall (120).

[0059] The pack cover (150) may have a square plate shape. The pack cover (150) may have a flat plate shape. 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, combined, fixed, or attached to the side wall (120). In addition, the pack cover (150) may cover the upper surface of the battery assembly (200, 201, 202, 203, 204).

[0060] FIGS. 5 to 7 are drawings showing a partition wall (300a) of a battery pack according to an embodiment of the present invention. FIG. 5 is a drawing showing the partition wall (300a) and the base plate (110) of the battery pack according to an embodiment of the present invention separated from each other, FIG. 6 is a drawing showing the combination of the partition wall (300a) and the base plate (110) of FIG. 5, and FIG. 7 is a drawing showing a cross-sectional configuration taken along the cutting line A-A' of FIG. 6.

[0061] Referring to FIGS. 5 to 7, a partition wall (300a) according to one embodiment of the present invention can provide an internal space. A heat-resistant member (310a) can be placed in the internal space. In this case, the heat-resistant member (310a) can be configured in the shape of a pad or plate.

[0062] According to this configuration of the present invention, the thermal safety of the battery pack can be improved. The partition wall (300a) has a heat-resistant member (310a) therein, thereby suppressing or blocking heat transmission between battery assemblies (200) when a thermal event occurs.

[0063] Referring to FIGS. 5 to 7, a partition wall (300a) according to an 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 have a square plate shape. In addition, the first plate (321a) and the second plate (322a) may form the exterior of the partition wall (300a). The first plate (321a) and the second plate (322a) may face each other. In addition, the first plate (321a) and the second plate (322a) may be spaced apart from each other in the thickness direction of the partition wall (300a). In addition, the heat-resistant member (310a) may be positioned between the first plate (321a) and the second plate (322a). Additionally, the heat-resistant member (310a) can be joined, fastened, attached, fixed or coated to the first plate (321a) or the second plate (322a).

[0064] 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 or flame.

[0065] Referring to FIGS. 5 to 7, a partition wall (300a) according to an embodiment of the present invention may include a first part (331a) and a fastening member (160). The first part (331a) may connect the lower portion of the first plate (321a) and the lower portion of the second plate (322a). In addition, the fastening member (160) may penetrate the base plate (110) and be at least partially inserted into the first part (331a).

[0066] According to this configuration of the present invention, the thermal safety of the battery pack can be improved. In addition, by fastening the base plate (110) and the partition wall (300a), the rigidity of the battery pack can be improved.

[0067] Referring to FIGS. 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). In addition, the first part (331a) may cover the lower edge of the heat-resistant member (310a) or the lower surface of the heat-resistant member (310a). In this case, the upper edge of the heat-resistant member (310a) or the upper surface of the heat-resistant member (310a) may have an exposed structure.

[0068] 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 or flame.

[0069] Below, the differences from the previously described embodiment will be explained, and overlapping explanations will be omitted.

[0070] FIGS. 8 to 11 are drawings showing a partition wall (300b) of a battery pack according to another embodiment of the present invention. FIG. 8 is a drawing showing the partition wall (300b) and the base plate (110) of the battery pack according to another embodiment of the present invention in a separate state, FIG. 9 is a drawing showing the combination of the partition wall (300b) and the base plate (110) of FIG. 8, FIG. 10 is a drawing showing a cross-sectional configuration along the cutting line B-B' of FIG. 9, and FIG. 11 is a drawing showing a cross-sectional configuration along the cutting line C-C' of FIG. 9.

[0071] Referring to FIGS. 8 to 11, a heat-resistant member (310b) of a partition wall (300b) of a battery pack according to another embodiment of the present invention can be in contact with the upper surface of a base plate (110).

[0072] 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 transmission suppression performance of the partition wall (300b).

[0073] Referring to FIGS. 8 to 11, a partition wall (300b) of a battery pack according to another embodiment of the present invention may include a second part (332b). The second part (332b) may connect the upper portion of the first plate (321b) and the upper portion of the second plate (322b).

[0074] 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 or flame.

[0075] Referring to FIGS. 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). In addition, the second part (332b) may cover the upper edge of the heat-resistant member (310b) or the upper surface of the heat-resistant member (310b).

[0076] 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 or flame.

[0077] Referring to FIGS. 8 to 11, a heat-resistant member (310b) of a battery pack according to another embodiment of the present invention may be composed 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 from each other along the length direction of the partition wall (300b). In addition, the first heat-resistant member (311b) and the second heat-resistant member (312b) may be positioned between the first plate (321b) and the second plate (322b), respectively.

[0078] Additionally, the partition wall (300b) may include a third part (333b). The third part (333b) may be positioned between the first heat-resistant member (311b) and the second heat-resistant member (312b). Furthermore, the third part (333b) may 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 be in contact with, fixed to, coupled to, or attached to the upper surface of the base plate (110).

[0079] According to this configuration of the present invention, the thermal safety of the battery pack can be improved. In addition, the bonding strength between the base plate (110) and the partition wall (300b) can be strengthened, and the rigidity of the battery pack can be improved.

[0080] Referring to FIGS. 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 at least partially inserted into the third part (333b).

[0081] According to this configuration of the present invention, the thermal safety of the battery pack can be improved. In addition, by fastening the base plate (110) and the partition wall (300b), the rigidity of the battery pack can be improved.

[0082] FIGS. 12 to 15 are drawings showing a partition wall (300c) of a battery pack according to another embodiment of the present invention. FIG. 12 is a drawing showing the partition wall (300c) and the base plate (110) of the battery pack according to another embodiment of the present invention separated, FIG. 13 is a drawing showing the combination of the partition wall (300c) and the base plate (110) of FIG. 12, FIG. 14 is a drawing showing a cross-sectional configuration along the cutting line D-D' of FIG. 13, and FIG. 15 is a drawing showing a cross-sectional configuration along the cutting line E-E' of FIG. 13.

[0083] Referring to FIGS. 12 to 15, the heat-resistant member (310c) may be positioned between the first plate (321c) and the second plate (322c). The first part (331c) may connect the lower portion of the first plate (321c) and the lower portion of the second plate (322c). The first parts (331c) may be provided in plurality. The plurality of first parts (331c) may be arranged along the longitudinal direction of the partition wall (300c). The heat-resistant member (310c) may have a receiving groove (311c) in which the first part (331c) is received. The heat-resistant member (310c) may be in contact with the upper surface of the base plate (110). At this time, the upper edge of the heat-resistant member (310c) or the upper surface of the heat-resistant member (310c) may have an exposed structure. And the first part (331c) can be in contact with, fixed to, coupled to, or attached to the upper surface of the base plate (110). In addition, the fastening member (160) can penetrate the base plate (110) and be inserted at least partially into the first part (331c).

[0084] According to this configuration of the present invention, the thermal safety of the battery pack can be improved. In addition, by fastening the base plate (110) and the partition wall (300c), the rigidity of the battery pack can be improved.

[0085] FIGS. 16 to 18 are drawings showing a partition wall (300d) of another battery pack according to another embodiment of the present invention. FIG. 16 is a drawing showing the partition wall (300d) and the base plate (110) of the battery pack according to another embodiment of the present invention separated, FIG. 17 is a drawing showing the combination of the partition wall (300d) and the base plate (110) of FIG. 16, and FIG. 18 is a drawing showing a cross-sectional configuration taken along the cutting line F-F' of FIG. 17.

[0086] Referring to FIGS. 16 to 18, a heat-resistant member (310d) of a battery pack according to another embodiment of the present invention may cover the outer surface of a partition wall (300d). At this time, the heat-resistant member (310d) may be positioned to face at least one surface of the battery assembly (200). At this time, the partition wall (300d) may be formed integrally.

[0087] 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 flame or heat.

[0088] Referring to FIGS. 16 to 18, a heat-resistant member (310d) of a battery pack according to another embodiment of the present invention may entirely cover the outer surface of a partition wall (300d). In this case, the heat-resistant member (310d) may also be referred to as a cover (310d). The heat-resistant member (310d) may be positioned between the partition wall (300d) and the battery assembly (200). In addition, the heat-resistant member (310d) may cover the upper surface of the partition wall (300d). In addition, the partition wall (300d) may be in contact with, fixed to, coupled to, or attached to the upper surface of the base plate (110). In addition, the fastening member (160) may penetrate the base plate (110) and at least a portion thereof may be inserted into the partition wall (300d).

[0089] 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) as a whole from flames or heat. Furthermore, by fastening the base plate (110) and the partition wall (300d), the rigidity of the battery pack can be improved.

[0090] Referring to FIGS. 16 to 18, a heat-resistant member (310d) of a battery pack according to another embodiment of the present invention may be attached to a partition wall (300d). Additionally, an adhesive member may be placed between the heat-resistant member (310d) and the partition wall (300d).

[0091] According to this configuration of the present invention, the thermal safety of the battery pack can be improved. Since the heat-resistant member (310d) is stably connected to the partition wall (300d), heat transmission between battery assemblies (200) can be suppressed or blocked when a thermal event occurs.

[0092] In addition, the battery pack according to the present invention may further include various components, for example, components of a battery pack known at the time of filing of the present invention, such as a BMS, a bus bar, a relay, a current sensor, etc.

[0093] A vehicle according to the present invention may include the battery pack according to the present invention described above. The battery pack according to the present invention may be applied to vehicles such as electric vehicles or hybrid vehicles. Furthermore, in addition to the battery pack, the vehicle according to the present invention may further include various other components included in the vehicle, such as a body, a motor, and control devices such as an electronic control unit (ECU).

[0094] Meanwhile, although terms indicating directions such as up, down, left, right, front, and back are used in this specification, it is obvious to those skilled in the art that these terms are only for convenience of explanation and may vary depending on the location of the target object or the location of the observer.

[0095] As described above, although the present invention has been described by limited embodiments and drawings, the present invention is not limited thereto, and it is obvious that various modifications and variations are possible within the scope of the technical idea of ​​the present invention and the equivalent scope of the patent claims to be described below by a person having ordinary skill in the art to which the present invention pertains.

Claims

1. Base plate; A battery assembly including a case installed on the upper surface of the base plate and a plurality of battery cells positioned inside the case; A partition wall installed on the upper surface of the above base plate; and, A battery pack including a heat-resistant member provided on one side of the above partition wall.

2. In paragraph 1, The above partition wall is, Provides internal space, The above heat-resistant member is, A battery pack placed in the above internal space.

3. In paragraph 2, The above partition wall is, Plate 1; and, A second plate is included that is spaced apart from the first plate and faces the first plate, The above heat-resistant member is, A battery pack positioned between the first plate and the second plate.

4. In paragraph 3, The above partition wall is, A battery pack further comprising a first part connecting the lower portion of the first plate and the lower portion of the second plate.

5. In paragraph 4, The above first part, A battery pack extending along the lower edge of the first plate and covering the lower edge of the heat-resistant member.

6. In paragraph 3, The above heat-resistant member is, A battery pack in contact with the upper surface of the above base plate.

7. In paragraph 3, The above partition wall is, A battery pack further comprising a second part connecting the upper portion of the first plate and the upper portion of the second plate.

8. In paragraph 7, The second part above is, A battery pack extending along the upper edge of the first plate and covering the upper edge of the heat-resistant member.

9. In paragraph 3, The above heat-resistant member is, It includes a first heat-resistant member and a second heat-resistant member that are spaced apart from each other, The above partition wall is, A battery pack further comprising a third part positioned between the first heat-resistant member and the second heat-resistant member and connecting the first plate and the second plate.

10. In paragraph 1, The above heat-resistant member is, A battery pack configured to have a thermal conductivity lower than the thermal conductivity of the above partition wall.

11. In paragraph 1, The above heat-resistant member is, A battery pack containing silicone or aerogel material.

12. In paragraph 1, The above heat-resistant member is, A battery pack covering the outer surface of the above partition wall.

13. In paragraph 12, The above heat-resistant member is, A battery pack that covers the entire outer surface of the above partition wall.

14. In paragraph 12, A battery pack further comprising an adhesive member disposed between the heat-resistant member and the partition wall.

15. In paragraph 12, The above heat-resistant member is, Battery pack containing mica material.

16. A vehicle comprising a battery pack according to any one of claims 1 to 15.

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