Battery pack and vehicle

Abstract

The utility model provides a battery pack and a vehicle and relates to the technical field of battery packs, the battery pack is used for solving the problems that a battery pack is large in weight and low in energy density, the battery pack comprises a shell and a lifting lug, the shell comprises a plurality of connecting structures, the connecting structures are fixedly arranged on the outer side wall of the shell, and the lifting lug is arranged in the shell. The plurality of connecting structures are arranged at intervals along the outer side wall of the shell; and the lifting lug is detachably connected with at least one of the connecting structures. The utility model provides a battery pack and a vehicle. The battery pack is light in weight and high in energy density.

Description

Technical Field

[0001] This application relates to the field of battery pack technology, and more particularly to a battery pack and a vehicle. Background Technology

[0002] A battery pack is an assembly that contains multiple battery cells and is typically used to power electric vehicles, energy storage systems, consumer electronics, and other devices that require electricity.

[0003] Lifting lugs are structural components used in battery packs, primarily for lifting and securing the battery packs to facilitate installation and transportation. In existing technologies, the lifting lugs are welded to the top of the battery pack or the inner and outer sides of the bottom cover to facilitate lifting and handling during manufacturing, transportation, and installation.

[0004] However, the traditional battery hanger and battery pack are integrated into one structure, resulting in a heavier battery pack, lower energy density, and poorer vehicle range. Utility Model Content

[0005] This application provides a battery pack and a vehicle that can reduce the weight of the battery pack, increase the energy density of the battery pack, and extend the driving range of the vehicle.

[0006] In a first aspect, this application provides a battery pack, including: a housing and a lifting lug. The housing includes a connecting structure, which is fixedly disposed on the outer side wall of the housing. The connecting structure has multiple structures, which are spaced apart along the outer side wall of the housing.

[0007] A lug, which is detachably connected to at least one of a plurality of connecting structures.

[0008] The battery pack described above also includes a connector, and the lifting lug is detachably connected to the connecting structure via the connector.

[0009] As described above, the battery pack includes a threaded connector and a connecting structure including a connecting nut that matches the threaded connector. The threaded connector is screwed into the internal threaded hole of the connecting nut to connect the lug to the connecting structure.

[0010] As described above, the battery pack includes a connector, a buckle, and a connection structure, which includes a slot that matches the buckle. The connector is fixedly mounted on the lug, and the buckle is engaged in the slot to connect the lug and the connection structure.

[0011] As described above, the battery pack includes a first magnetic component and a second magnetic component in its connecting structure. The first and second magnetic components are magnetically attracted to each other.

[0012] As described above, in a battery pack, the first magnetic component is either a magnet or a permanent magnet, and the second magnetic component is either a magnet or a permanent magnet.

[0013] As described above, the connection structure of the battery pack also includes a limiting bracket, which is connected to the housing and forms an accommodating space. The connecting nut is located within the accommodating space.

[0014] The battery pack described above includes at least one of the following:

[0015] The lifting lug includes a top plate, side plates, and a back plate. The back plate and side plates are respectively arranged around the perimeter of the top plate, and the back plate is arranged opposite to the connecting structure.

[0016] The lifting lug also includes a sleeve, which is fixedly installed on the top plate;

[0017] The lifting lug also includes reinforcing ribs, which surround the periphery of the sleeve and extend from one end near the sleeve to the back plate and side plate.

[0018] As mentioned above, the battery pack has cast steel lifting lugs.

[0019] Secondly, embodiments of this application provide a vehicle, including a vehicle body and the aforementioned battery pack, wherein the battery pack is disposed within the vehicle body.

[0020] This application provides a battery pack and a vehicle. By providing a connecting structure on the outside of the battery pack housing, and using this connecting structure to achieve a detachable connection between the housing and the lifting lugs, the lifting lugs are only used during the battery pack installation process. After the battery pack is transported and installed, the lifting lugs can be removed, thereby reducing the weight of the battery pack, increasing its energy density, and extending the vehicle's range. Furthermore, this detachable connection method allows operators to select different specifications of lifting lugs according to the weight of the battery pack, providing high flexibility and applicability. Attached Figure Description

[0021] Figure 1 This is a partial exploded schematic diagram of the casing and lifting lugs in a battery pack according to an embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the structure of a housing in a battery pack according to an embodiment of this application;

[0023] Figure 3 This is a schematic diagram of the structure of a lifting lug in a battery pack from one perspective, provided in an embodiment of this application;

[0024] Figure 4 This is a schematic diagram of the structure of a hanging lug in a battery pack from another perspective, as provided in an embodiment of this application.

[0025] Explanation of reference numerals in the attached figures:

[0026] 10-Battery Pack;

[0027] 100 - Shell; 111 - Base plate; 112 - First frame beam; 113 - Second frame beam; 120 - Connection structure;

[0028] 200 - Lifting lug; 211 - Top plate; 212 - Side plate; 213 - Back plate; 214 - Sleeve; 215 - Reinforcing rib;

[0029] 216 - Mounting hole; 220 - Connector. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] A battery pack is an assembly that contains multiple battery cells and is typically used to power electric vehicles, energy storage systems, consumer electronics, and other devices that require electricity.

[0032] Lifting lugs are structural components used in battery packs, primarily for lifting and securing the battery packs to facilitate installation and transportation. In existing technologies, the lifting lugs are welded to the top of the battery pack or the inner and outer sides of the bottom cover to facilitate lifting and handling during manufacturing, transportation, and installation.

[0033] However, the traditional battery hanger and battery pack are integrated into one structure, resulting in a heavier battery pack, lower energy density, and poorer vehicle range.

[0034] To address this, this application provides a battery pack and vehicle. By incorporating a connecting structure on the exterior of the battery pack casing, and using this structure to achieve a detachable connection between the casing and the lifting lugs, the lifting lugs are only used during battery pack installation. After transportation and installation are complete, the lifting lugs can be removed, thereby reducing the weight of the battery pack, increasing its energy density, and extending the vehicle's range. Furthermore, this detachable connection method allows operators to select different specifications of lifting lugs based on the weight of the battery pack, offering high flexibility and applicability.

[0035] The following is a further description of one type of battery pack in this embodiment.

[0036] Figure 1 This is a partial exploded schematic diagram of the casing and lifting lugs in a battery pack according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a housing in a battery pack according to an embodiment of this application; Figure 3 This is a schematic diagram of the structure of a lifting lug in a battery pack from one perspective, provided in an embodiment of this application; Figure 4 This is a schematic diagram of the structure of a hanging lug in a battery pack from another perspective, as provided in an embodiment of this application.

[0037] A battery pack consists of battery modules and their casing. Its main function is to fix, protect, and support the battery modules. The casing accounts for approximately 20% to 30% of the total weight of the battery pack. Since the improvement of cell energy density is slow, reducing the weight of the battery pack casing is one of the important methods to improve driving range.

[0038] Currently, most electric vehicle batteries on the market adopt a battery pack enveloping structure that includes a casing, seals, and thermal insulation materials. However, using this fully enveloping structure increases the weight of the battery pack 10 and reduces its energy density, resulting in an energy density below 125Wh / kg, which does not meet design requirements.

[0039] In order to ensure that the battery cells and other components inside the battery pack are completely enclosed and protected without increasing the weight of the battery pack 10, thereby improving the safety and stability of the battery pack and preventing external factors from affecting the internal structure of the battery pack.

[0040] like Figure 1 As shown, this application embodiment provides a battery pack 10, including:

[0041] The housing 100 covers the outside of the battery cell, providing a robust structure to protect the battery cell inside the housing 100 from physical impacts and to prevent moisture and dust from entering the housing 100 and damaging the battery cell, thus ensuring that the battery pack 10 can operate normally in various environments.

[0042] In this embodiment, the housing 100 is manufactured using a roll forming process, resulting in high strength and hardness to ensure good durability and impact resistance during use. Furthermore, the roll forming process provides consistent material thickness and quality, thereby improving the consistency and reliability of the housing 100. Additionally, the roll forming process offers high material utilization, reducing material waste and effectively lowering production costs.

[0043] For example, the material of the housing 100 can be stainless steel, aluminum alloy, magnesium alloy, etc. This embodiment does not limit this. In this embodiment, aluminum alloy is used as an example to illustrate that the material of the housing 100 is aluminum alloy, so that the weight of the housing 100 can be reduced and the energy density of the battery pack 10 can be increased while meeting the mechanical performance requirements.

[0044] refer to Figure 1 and Figure 2As shown, the housing 100 includes a connecting structure 120, which is fixedly disposed on the outer side wall of the housing 100 for connecting with the lifting lug 200. There are multiple connecting structures 120, which are spaced apart along the outer side wall of the housing 100. In this embodiment, the number of connecting structures 120 is not limited, as long as they can serve the function of connecting with the lifting lug 200. The number of connecting structures 120 can be selected according to the actual situation.

[0045] Specifically, the number of connecting structures 120 is greater than the number of lifting lugs 200. The purpose of this arrangement is to allow the lifting lugs 200 to selectively connect with the connecting structures 120, thus serving as a backup and preventing damage to the connecting structures 120 that would prevent the lifting lugs 200 from being unable to connect with them.

[0046] Continue to refer to Figure 2 As shown, the housing 100 includes a base plate 111, a first frame beam 112 and a second frame beam 113. The first frame beam 112 and the second frame beam 113 are connected around the base plate 111. The first frame beam 112 extends along a first direction and the second frame beam 113 extends along a second direction. The connecting structure 120 is fixedly installed on the first frame beam 112.

[0047] In this embodiment, the first direction is Figure 2 The "X" direction in the diagram, the second direction is... Figure 2 In the "Y" direction, there are two of each of the first frame beam 112 and the second frame beam 113, and the first frame beam 112 and the second frame beam 113 are connected end to end in sequence to form the frame of the battery pack 10.

[0048] Specifically, the connecting structure 120 is located on the first frame beam 112 which is set on the outside of the housing 100. It can balance the force when hoisting the battery pack 10 and prevent the battery pack 10 from tilting and falling off due to excessive center of gravity shift.

[0049] In this embodiment, the lifting lug 200 is detachably connected to the connecting structure 120 so that the lifting lug 200 can be disassembled and assembled. When the battery pack 10 is hoisted to a fixed position, the lifting lug 200 can be removed from the battery pack to reduce the weight of the battery pack 10 and increase the energy density of the battery pack. Specifically, the energy density of the battery pack 10 in this embodiment is higher than 125Wh / kg.

[0050] Among them, the lifting lugs 200 need to be able to withstand the total weight of the battery pack 10 and ensure that the load is evenly distributed to avoid putting excessive pressure on a single lifting lug 200. In addition, the design and number of lifting lugs 200 should ensure the safety of the battery pack during transportation, installation and maintenance.

[0051] Furthermore, the lifting lugs 200 should be symmetrically distributed to maintain the balance of the battery pack 10 during lifting and movement. Specifically, the number and specifications of the lifting lugs 200 can be selected according to the actual situation, and this embodiment does not impose any restrictions on this.

[0052] In one feasible implementation, a connector 220 is also included, and the lifting lug 200 is detachably connected to the connecting structure 120 via the connector 220. This arrangement is intended to facilitate disassembly and assembly and to facilitate subsequent disassembly.

[0053] It should be noted that the connector 220 can take many forms, which will be explained below in light of different situations:

[0054] In one possible implementation, the connector 220 includes a threaded connector, and the connection structure 120 includes a connecting nut that matches the threaded connector. The threaded connector is screwed into the internal threaded hole of the connecting nut to connect the lug 200 to the connection structure 120.

[0055] For example, the type of threaded fastener can be a bolt, stud, screw, etc. This embodiment does not limit this, as long as it can play the role of fixing connection. In this embodiment, the type of threaded fastener is a bolt, specifically, the bolt specification is M10*125.

[0056] Specifically, the number of connectors 220 can be one or more; this embodiment does not limit this. (See reference...) Figure 1 As shown, in this embodiment, the example is that there are two connectors 220.

[0057] The lifting lug 200 has a mounting hole 216 on the side opposite to the connecting structure 120. The connecting structure 120 has a through hole corresponding to the mounting hole 216. The connector 220 passes through the mounting hole 216 and is screwed into the threaded hole of the connecting nut to connect the lifting lug 200 to the housing 100.

[0058] In this embodiment, the connecting nut is fixed to the outer wall of the housing 100 by resistance welding, which has high connection strength and ensures that a firm connection is formed between the connecting nut and the housing 100, and can withstand large mechanical loads and vibrations.

[0059] The specifications of the connecting nut should match the dimensions of the connector 220. Specifically, in this embodiment, the specifications of the connecting nut are selected as M10*1.25.

[0060] Specifically, when the battery pack 10 needs to be moved, the connector 220 is screwed into the connecting nut to fix the lifting lug 200 to the housing 100, thus realizing the moving operation; when the battery pack 10 is moved to the target position, the connector 220 is separated from the connecting nut to remove the lifting lug 200 from the housing 100, thereby reducing the weight of the battery pack 10.

[0061] In one possible implementation, the connector 220 includes a snap fastener, and the connecting structure 120 includes a slot that matches the snap fastener. The connector 220 is fixedly disposed on the lug 200, and the snap fastener is engaged in the slot to connect the lug 200 and the connecting structure 120.

[0062] In this embodiment, the snap-fit ​​connection method facilitates subsequent disassembly and assembly without the need for additional tools, and the slot provides good mechanical stability, ensuring that the lifting lug 200 will not easily fall off during use, thus improving the safety of the overall structure.

[0063] In one feasible implementation, the connector 220 includes a first magnetic element, and the connecting structure 120 includes a second magnetic element. The first and second magnetic elements are magnetically attracted to each other, thereby enabling the lug 200 to be quickly and easily connected and separated from the housing 100, which has high convenience. In addition, the magnetic connection method can reduce wear caused by friction, thereby extending the service life of the lug 200 and the housing 100.

[0064] Specifically, when using a magnetic connection method, it should be ensured that the magnetic force of the magnet is strong enough to withstand the weight of the battery pack 10 and any possible dynamic loads, and to prevent the battery pack 10 from falling off. In addition, the position of the lifting lugs 200 should be arranged reasonably to prevent electromagnetic interference caused by improper arrangement of the lifting lugs 200.

[0065] In one optional implementation, the first magnetic component is a magnet and the second magnetic component is a permanent magnet, or the first magnetic component is a permanent magnet and the second magnetic component is a magnet. In this embodiment, the form of the first magnetic component and the second magnetic component is not limited.

[0066] Understandably, in actual operation, the form of the connector 220 should be selected according to the actual situation, as long as it can satisfy the detachable connection between the lifting lug 200 and the housing 100.

[0067] In an optional embodiment, the connecting structure 120 further includes a limiting bracket connected to the housing 100 to prevent the lifting lug 200 from moving during the transport of the battery pack 10, thereby ensuring the stability and safety of the battery pack 10. Specifically, the limiting bracket encloses a receiving space, and the connecting nut is located within the receiving space.

[0068] In one optional embodiment, the lifting lug 200 includes a top plate 211, a side plate 212 and a back plate 213. The back plate 213 and the side plate 212 are respectively arranged around the periphery of the top plate 211, and the back plate 213 is arranged opposite to the connecting structure 120.

[0069] In this embodiment, reference Figure 3 and Figure 4 As shown, the top plate 211 has mounting holes for connecting to a handling tool to move the battery pack 10. There are two side plates 212, which are respectively connected to the two ends of the back plate 213, and mounting holes 216 are provided on the back plate 213.

[0070] Specifically, computer simulation software can be used to perform topology optimization on the structure of the lifting lug 200 so that the lifting lug 200 can effectively reduce its weight while meeting the requirements of mechanical performance.

[0071] In an alternative embodiment, the lifting lug 200 further includes a sleeve 214, which is fixedly mounted on the top plate 211.

[0072] For example, the sleeve 214 and the top plate 211 can be connected together by assembly, which is convenient for subsequent disassembly and replacement. Alternatively, the sleeve 214 and the top plate 211 can also be integrally formed by casting, which has high strength. In this embodiment, there is no restriction on the connection method of the sleeve 214 and the top plate 211, as long as the sleeve 214 can be fixedly set on the top plate 211.

[0073] Specifically, a layer of wear-resistant material can be provided inside the sleeve 214 to prevent wear inside the sleeve 214 during long-term use, thereby extending the service life of the sleeve 214.

[0074] In one alternative embodiment, the lifting lug 200 further includes a reinforcing rib 215, which surrounds the periphery of the sleeve 214 and extends from one end near the sleeve 214 to the back plate 213 and the side plate 212.

[0075] For example, the reinforcing rib 215 can be fixed to the sleeve 214 by welding, which has high connection strength. Alternatively, the reinforcing rib 215 can be integrally formed with the sleeve 214. In this embodiment, there is no limitation on this, as long as the reinforcing rib 215 can be fixed to the periphery of the sleeve 214.

[0076] In this embodiment, the reinforcing ribs 215 are arranged on the periphery of the sleeve 214. The purpose of this arrangement is to effectively disperse stress, prevent excessive local stress from causing deformation or bending during use, and also to improve the structural strength of the lifting lugs 200, enabling them to withstand greater loads and stresses, thereby ensuring the safety and reliability of the battery pack 10.

[0077] In one feasible implementation, the lifting lug 200 is a cast steel lifting lug.

[0078] Specifically, in this embodiment, the lifting lug 200 can be made of cast steel. This is because cast steel has high mechanical strength, can withstand large loads, and is highly reliable. Furthermore, cast steel has good wear resistance, maintaining its structural integrity during long-term use, reducing wear and deformation, and extending the service life of the lifting lug 200. Moreover, cast steel lifting lugs can be mass-produced to reduce production costs.

[0079] This embodiment provides a battery pack 10, including: a housing 100, including connecting structures 120, which are fixedly disposed on the outer side wall of the housing 100, and multiple connecting structures 120 are provided, spaced apart along the outer side wall of the housing 100; and lifting lugs 200, which are detachably connected to at least one of the multiple connecting structures 120. By providing connecting structures 120 on the outside of the housing 100 of the battery pack 10, and using connecting structures 120 to achieve a detachable connection between the housing 100 and the lifting lugs 200, the lifting lugs 200 are only used during the installation of the battery pack 10. After the battery pack 10 is transported and installed, the lifting lugs 200 can be removed, thereby reducing the weight of the battery pack 10, increasing the energy density of the battery pack 10, and extending the vehicle's range. Furthermore, this detachable connection method allows operators to select lifting lugs of different specifications according to the weight of the battery pack 10, providing high flexibility and applicability.

[0080] This embodiment also provides a vehicle, including a vehicle body and the aforementioned battery pack 10, wherein the battery pack 10 is disposed within the vehicle body. The specific structure, function, and working principle of the battery pack 10 have been described in detail in the foregoing embodiments and will not be repeated here.

[0081] For example, the battery pack 10 can be a lithium-ion battery pack, a nickel-metal hydride battery pack, a lead-acid battery pack, or a solid-state battery pack; this embodiment does not limit this.

[0082] The battery pack 10 also includes battery cells and a cover. The battery cells are stacked inside the housing 100, and the cover is placed on the upper surface of the cell module. Fasteners are used to connect the cover to the housing 100 to provide protection.

[0083] Specifically, the battery pack 10 is fixedly connected to the vehicle frame using welding technology or threaded connection. In this embodiment, there are no restrictions on the connection method between the battery pack 10 and the vehicle body, as long as the battery pack 10 can be fixed to the vehicle body.

[0084] The types of vehicles include, but are not limited to, electric vehicles, hybrid vehicles, electric trucks, and electric vans.

[0085] The terms "first," "second," etc., used in the embodiments of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0086] In the embodiments of this application, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this application according to the specific circumstances.

[0087] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0088] It should be noted that the embodiments referred to in the specification, such as "one embodiment," "embodiment," "exemplary embodiment," and "some embodiments," may include specific features, structures, or characteristics, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0089] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "one" can be understood to convey either singular or plural usage.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery pack, characterized in that, include: The housing (100) includes a connecting structure (120), which is fixedly disposed on the outer side wall of the housing (100), and there are multiple connecting structures (120), which are spaced apart along the outer side wall of the housing (100). The lug (200) is detachably connected to at least one of the plurality of the connecting structures (120); Includes at least one of the following: The lifting lug (200) includes a top plate (211), a side plate (212) and a back plate (213). The back plate (213) and the side plate (212) are respectively arranged around the periphery of the top plate (211), and the back plate (213) is arranged opposite to the connecting structure (120). The lifting lug (200) also includes a sleeve (214), which is fixedly mounted on the top plate (211); The lug (200) also includes a reinforcing rib (215) which surrounds the periphery of the sleeve (214) and extends from one end near the sleeve (214) to the back plate (213) and the side plate (212).

2. The battery pack according to claim 1, characterized in that, It also includes a connector (220), through which the lug (200) is detachably connected to the connecting structure (120).

3. The battery pack according to claim 2, characterized in that, The connector (220) includes a threaded connector, and the connection structure (120) includes a connecting nut that matches the threaded connector. The threaded connector is screwed into the internal threaded hole of the connecting nut to connect the lug (200) to the connection structure (120).

4. The battery pack according to claim 2, characterized in that, The connector (220) includes a buckle, and the connecting structure (120) includes a slot that matches the buckle. The connector (220) is fixedly mounted on the lug (200), and the buckle is engaged in the slot to connect the lug (200) to the connecting structure (120).

5. The battery pack according to claim 2, characterized in that, The connector (220) includes a first magnetic element, and the connection structure (120) includes a second magnetic element. The first magnetic element and the second magnetic element are magnetically attracted to each other.

6. The battery pack according to claim 5, characterized in that, The first magnetic component is one of a magnet and a permanent magnet, and the second magnetic component is the other of the magnet and the permanent magnet.

7. The battery pack according to claim 3, characterized in that, The connection structure (120) further includes a limiting bracket, which is connected to the housing (100). The limiting bracket encloses and forms an accommodating space, and the connecting nut is located within the accommodating space.

8. The battery pack according to any one of claims 1-7, characterized in that, The lifting lug (200) is a cast steel lifting lug.

9. A vehicle, characterized in that, It includes a vehicle body and a battery pack (10) as described in any one of claims 1-8, wherein the battery pack (10) is disposed within the vehicle body.

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