A cap assembly, a battery, a battery module, a battery pack, and a vehicle

Abstract

The application discloses a cap assembly, a battery, a battery module, a battery pack and a vehicle, and relates to the technical field of batteries. The cap assembly is used for a battery, the battery comprises a battery cell and a shell for accommodating the battery cell, and the cap assembly comprises a cover plate, a bus bar and a terminal. The cover plate is arranged at the bottom end of the shell and is connected with the second pole tab of the battery cell. The bus bar is attached to the top end of the battery cell to be connected with the first pole tab of the battery cell. The bus bar is provided with a pole column. The terminal is arranged at the top end of the shell and is electrically connected with the bus bar through the pole column. There is a gap between the top end of the bus bar and the bottom end of the terminal. According to the application, the gap is arranged between the bus bar and the terminal, so that friction and collision during assembly and use are avoided, the working performance and service life of the battery are ensured as much as possible, the number of parts required by the cap assembly is reduced as much as possible, and the manufacturing cost is saved.

Description

Technical Field

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

[0002] Batteries are widely used in daily life. A traditional battery mainly consists of a cell, a casing, and a cap assembly. The cell is placed inside the casing, and its tabs are bent and folded before being connected to the cap assembly, thus establishing an electrical connection between the cap assembly and the cell, and sealing the battery casing. However, during battery assembly, considering the large number of components in the cap assembly and the relatively small size of the battery, friction and collisions often occur between these components during assembly and use. This can damage the battery's performance and reduce its lifespan. Summary of the Invention

[0003] The first objective of this invention is to provide a cap assembly that can prevent friction and collision during assembly and use, thereby maximizing the battery's performance and lifespan, while also minimizing the number of parts required for the cap assembly, saving manufacturing costs, and reducing disassembly and assembly steps.

[0004] To achieve the above-mentioned technical effects, the technical solution of the present invention is as follows:

[0005] A cap assembly for a battery, the battery including a cell and a housing for receiving the cell, the cap assembly comprising:

[0006] A cover plate is disposed at the bottom end of the housing and connected to the second electrode tab of the battery cell;

[0007] A busbar is attached to the top of the battery cell to connect with the first electrode tab of the battery cell, and a pole post is provided on the busbar (112).

[0008] The terminal is disposed at the top of the housing and electrically connected to the busbar through the pole, and there is a gap between the top of the busbar and the bottom of the terminal.

[0009] As an alternative to the cap assembly, the cap assembly further includes an energy-absorbing structure connected to the terminal, the housing, and the manifold, respectively, and the energy-absorbing structure is configured to allow a gap between the top of the manifold and the bottom of the terminal.

[0010] As an alternative to the cap assembly, the energy-absorbing structure includes a sealing ring and a plastic gasket, the sealing ring being located between the housing and the terminal, the plastic gasket being located between the housing and the manifold, and the sealing ring passing through the plastic gasket.

[0011] As an alternative to the cap assembly, the edge of the plastic pad extends along the direction close to the manifold to form an isolation portion. The plastic pad can cover the manifold through the isolation portion, and the isolation portion can fit against the inner wall of the housing.

[0012] As an alternative to the cap assembly, the cap plate is provided with a welded part and an explosion-proof valve. The welded part protrudes from the cap plate in a direction close to the battery cell, and the explosion-proof valve protrudes from the cap plate in a direction away from the battery cell.

[0013] As an alternative to the cap assembly, the cap plate is provided with a liquid injection hole, which coincides with the axis of the battery cell, and the cap plate protrudes along the edge of the liquid injection hole toward the battery cell to form a liquid injection boss.

[0014] The second objective of this invention is to provide a battery that, by applying the aforementioned cap assembly, can avoid friction and collision during assembly and use, thereby maximizing the battery's performance and lifespan, while also minimizing the number of parts required for the cap assembly, saving manufacturing costs, and reducing disassembly and assembly processes.

[0015] To achieve the above-mentioned technical effects, the technical solution of the present invention is as follows:

[0016] A battery includes a cell, a housing, and a cap assembly as described above, the housing for housing the cell, and the cap assembly connected to the cell and the housing, respectively.

[0017] The third objective of this invention is to provide a battery module that, by using the battery described above, avoids friction and collision during assembly and use, thus ensuring the battery's performance and lifespan as much as possible. It also minimizes the number of parts required for the cap assembly, saving manufacturing costs and reducing disassembly and assembly processes.

[0018] To achieve the above-mentioned technical effects, the technical solution of the present invention is as follows:

[0019] A battery module comprising a plurality of batteries as described above, wherein the plurality of batteries are arranged in multiple rows and columns.

[0020] The fourth objective of this invention is to provide a battery pack that, by applying the above-mentioned battery module, avoids friction and collision during assembly and use, thus ensuring the battery's performance and lifespan as much as possible. It also minimizes the number of parts required for the cap assembly, saving manufacturing costs and reducing disassembly and assembly processes.

[0021] To achieve the above-mentioned technical effects, the technical solution of the present invention is as follows:

[0022] A battery pack includes a housing and the aforementioned battery module, wherein the battery module is disposed within the housing.

[0023] The fifth objective of this invention is to provide a vehicle that, by applying the aforementioned battery pack, can avoid friction and collision during assembly and use, thereby maximizing the battery's performance and lifespan, minimizing the number of parts required for the cap assembly, saving manufacturing costs, and reducing disassembly and assembly processes.

[0024] To achieve the above-mentioned technical effects, the technical solution of the present invention is as follows:

[0025] A vehicle includes a vehicle body and a battery pack as described above, the battery pack being disposed within the vehicle body.

[0026] The beneficial effects of this invention are as follows: This invention provides a cap assembly, a battery, a battery module, a battery pack, and a vehicle. By creating a gap between the combiner plate and the terminals, friction and collisions during assembly and use are avoided, thus maximizing battery performance and lifespan. Furthermore, it minimizes the number of components required for the cap assembly, saving manufacturing costs and reducing disassembly and assembly steps. This invention effectively prevents friction and collisions during assembly and use, maximizing battery performance and lifespan, while also minimizing the number of components required for the cap assembly, saving manufacturing costs, and reducing disassembly and assembly steps.

[0027] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the battery module provided in a specific embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the battery structure provided in a specific embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the battery structure in an explosive state according to a specific embodiment of the present invention;

[0031] Figure 4 This is a cross-sectional view of the battery provided in a specific embodiment of the present invention;

[0032] Figure 5 yes Figure 4 A magnified schematic diagram of the local structure at point A;

[0033] Figure 6 yes Figure 4A magnified view of the structure at point B in the middle;

[0034] Figure 7 This is a bottom view of a battery provided in a specific embodiment of the present invention;

[0035] Figure 8 yes Figure 7 Schematic diagram of the cross-sectional structure along the CC direction;

[0036] Figure 9 yes Figure 8 A magnified schematic diagram of the local structure at point D;

[0037] Figure 10 This is a bottom view of another battery provided in a specific embodiment of the present invention;

[0038] Figure 11 yes Figure 10 Schematic diagram of the cross-sectional structure along the EE direction;

[0039] Figure 12 yes Figure 11 A magnified schematic diagram of the structure at point F in the middle.

[0040] Figure label:

[0041] 1. Battery;

[0042] 11. Cap assembly; 111. Cover plate; 1111. Welding part; 1112. Explosion-proof valve; 11121. Explosion-proof groove; 1113. Limiting part; 1114. Injection hole; 112. Manifold; 113. Terminal; 114. Energy-absorbing structure; 1141. Sealing ring; 1142. Plastic gasket; 11421. First annular groove; 11422. Second annular groove; 11423. Isolation part;

[0043] 12. Shell;

[0044] 13. Battery cell; 131. First electrode tab; 132. Second electrode tab;

[0045] 14. Solder section; 15. Solder ball section. Detailed Implementation

[0046] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0047] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of the invention, unless otherwise stated, "a plurality of" means two or more. Furthermore, the terms "first" and "second" are only used for descriptive distinction and have no special meaning. The terms "first position" and "second position" refer to two different positions.

[0050] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0051] like Figure 1As shown, this embodiment provides a vehicle, including a vehicle body and a battery pack. The battery pack is disposed within the vehicle body and provides power to the vehicle body to drive its movement. The battery pack includes a housing and battery modules. The battery modules are disposed within the housing, which serves to fix and protect them. Specifically, to maximize the maximum amount of electricity that the entire battery module can store, the battery module includes multiple batteries 1, arranged in multiple rows and columns. It is understood that the number and specific arrangement of the batteries 1 can be adjusted according to actual conditions, and this embodiment does not impose specific limitations.

[0052] Combination Figure 2 , Figure 3 and Figure 4 As shown, the battery includes a cell 13, a casing 12, and a cap assembly 11. The casing 12 houses the cell 13. The cap assembly 11 is connected to both the cell 13 and the casing 12. The cap assembly 11 includes a cover plate 111, a busbar 112, and terminals 113. The cover plate 111 is disposed at the bottom of the casing 12 and connected to the second electrode tab 132 of the cell 13. The busbar 112 is attached to the top of the cell 13 to connect to the first electrode tab 131 of the cell 13. A terminal post is provided on the busbar 112. The terminal 113 passes through the top of the casing 12 and is electrically connected to the busbar 112 through the terminal post. There is a gap between the top of the busbar 112 and the bottom of the terminal 113. It can be understood that in this embodiment, the first electrode tab 131 is the positive electrode tab, and the second electrode tab 132 is the negative electrode tab.

[0053] It is understood that the cap assembly 11 in this embodiment, by creating a gap between the busbar 112 and the terminal 113, avoids friction and collision during assembly and use, thereby maximizing the working performance and lifespan of the battery 1. It also minimizes the number of parts required for the cap assembly 11, saving manufacturing costs and reducing disassembly and assembly steps. This cap assembly 11 effectively prevents friction and collision during assembly and use, maximizing the working performance and lifespan of the battery 1, while also minimizing the number of parts required, saving manufacturing costs, and reducing disassembly and assembly steps.

[0054] In this embodiment, combined with Figure 4 and Figure 5 As shown, the cap assembly 11 also includes an energy-absorbing structure 114, which is connected to the terminal 113, the housing 12, and the busbar 112. The energy-absorbing structure 114 is configured to create a gap between the top of the busbar 112 and the bottom of the terminal 113. Furthermore, by providing the energy-absorbing structure 114, a certain degree of shock absorption and buffering effect is achieved between the terminal 113, the housing 12, and the busbar 112, enhancing the battery 1's vibration resistance and impact resistance, and extending the overall lifespan of the battery 1.

[0055] Specifically, the energy-absorbing structure 114 includes a sealing ring 1141 and a plastic gasket 1142. The sealing ring 1141 is located between the housing 12 and the terminal 113, and the plastic gasket 1142 is located between the housing 12 and the manifold 112, with the sealing ring 1141 passing through the plastic gasket 1142. It is understood that by providing the sealing ring 1141, a seal can also be achieved between the terminal 113 and the housing 12, ensuring the safety of the cap assembly 11. Furthermore, the cooperation of the sealing ring 1141 and the plastic gasket 1142 creates a gap between the top of the manifold 112 and the bottom of the terminal 113. For example, the sealing ring 1141 can be made of electrolyte-resistant rubber or elastic plastic.

[0056] In this embodiment, the surface of the plastic pad 1142 is uneven to absorb the stress generated when the plastic pad 1142 swells, reduce the stress pressure on the battery cell 13 and the housing 12, and also absorb the pressure generated by the expansion of the battery cell 13 due to charging.

[0057] Specifically, the top surface of the plastic pad 1142 is provided with a plurality of first annular grooves 11421, which are equidistantly distributed radially to improve the shock absorption and buffering effect of the entire energy-absorbing structure 114. Similarly, the bottom surface of the plastic pad 1142 is provided with a plurality of second annular grooves 11422, which are equidistantly distributed radially. It can be understood that the plastic pad 1142 will swell in the electrolyte of the battery 1. The first annular grooves 11421 and the second annular grooves 11422 can absorb the stress generated by the plastic pad 1142 during swelling, reducing the stress pressure on the cell 13 and the casing 12. In addition, when the cell 13 expands due to charging, the first annular grooves 11421 and the second annular grooves 11422 can also absorb the pressure of the cell 13 expansion.

[0058] Furthermore, the first annular groove 11421 and the second annular groove 11422 are staggered, so that the surface of the plastic pad 1142 is uneven, thereby further enhancing the shock absorption and cushioning effect of the entire plastic pad 1142.

[0059] In this embodiment, the edge of the plastic pad 1142 extends along the direction close to the busbar 112 to form an isolation portion 11423. The plastic pad 1142 can cover the busbar 112 through the isolation portion 11423. The side of the isolation portion 11423 away from the busbar 112 is in contact with the inner wall of the housing 12. That is, the isolation portion 11423 separates the side peripheral wall of the busbar 112 from the inner wall of the housing 12, thereby avoiding direct contact between the busbar 112 and the housing 12 and improving the overall voltage resistance performance of the battery 1. Exemplarily, the busbar 112 is made of aluminum.

[0060] Furthermore, to avoid stress concentration when the insulating part 111423 comes into contact with the housing 12, a chamfer is provided on the end face of the insulating part 11423 away from the battery cell 13. That is, the chamfer is used to disperse stress and improve the service life of the plastic pad 11423. Optionally, the angle of the chamfer is less than or equal to 60°.

[0061] Specifically, to ensure that the plastic pad 1142 can be placed over the busbar 112 via the isolation part 11423, the isolation part 11423 and the plastic pad 1142 form a receiving groove for accommodating the busbar 112. The sidewall of the receiving groove is in contact with at least a portion of the sidewall of the busbar 112, and the bottom of at least a portion of the receiving groove is in contact with the top surface of the busbar 112. Preferably, to improve the protection of the busbar 112, the depth of the receiving groove is adapted to the thickness of the busbar 112, and the diameter of the receiving groove is adapted to the diameter of the busbar 112. This ensures that all surfaces of the busbar 112 except those in contact with the battery cell 13 are in contact with the receiving groove, preventing the busbar 112 from moving within the receiving groove and causing unnecessary wear.

[0062] Among them, such as Figures 6 to 12 As shown, the cover plate 111 is provided with a welding part 1111 and an explosion-proof valve 1112. The welding part 1111 protrudes from the cover plate 111 in the direction close to the battery cell 13, and the explosion-proof valve 1112 protrudes from the cover plate 111 in the direction away from the battery cell 13. That is, the welding part 1111 is welded to the second electrode tab 132 of the battery cell 13, and the explosion-proof valve 1112 provides an explosion-proof function for the battery cell 13. Furthermore, since the welded part 1111 protrudes from the cover plate 111 in the direction closer to the battery cell 13, and the explosion-proof valve 1112 protrudes from the cover plate 111 in the direction away from the battery cell 13, that is, the top surface of the cover plate 111 and the bottom surface of the second electrode tab 132 are at a distance h1, and the bottom surface of the explosion-proof valve 1112 and the bottom surface of the second electrode tab 132 are at a distance h2, it can be known that h2 > h1 > 0. Therefore, the force generated when the battery cell 13 expands can be absorbed through h1, and the height difference between h2 and h1 can be used to collect the explosion gas. While ensuring the stable connection between the cover plate 111 and the second electrode tab 132, the battery 1 is prevented from spontaneously combusting or exploding due to excessive internal pressure, thus improving the safety of the battery 1.

[0063] Optionally, the maximum width of the explosion-proof valve 1112 is less than half the radius of the housing 12, in order to minimize the exhaust space required for the entire battery module.

[0064] Furthermore, the explosion-proof valve 1112 is provided with explosion-proof grooves 11121. The explosion-proof grooves 11121 are formed by stamping so that when the internal pressure of the battery 1 is too high, the gas inside the casing 12 can be released along the explosion-proof grooves 11121, reducing the damage to the battery 1 caused by gas release.

[0065] Furthermore, multiple welding portions 1111 are provided, and the multiple welding portions 1111 are arranged around the cover plate 111 to ensure the stability of the connection with the second electrode tab 132. For example, three welding portions 1111 are provided.

[0066] Optionally, the welding portion 1111 is arc-shaped, and the maximum arc length of the welding portion 1111 is greater than half the radius of the battery cell 13, so as to maximize the contact area between the battery cell 13 and the cover plate 111 and improve the stability of the electrical connection between the two. Of course, in other embodiments, the welding portion 1111 can also be other shapes, as long as the welding portion 1111 and the second electrode tab 132 can be welded stably. This embodiment does not impose specific limitations.

[0067] Optionally, multiple explosion-proof valves 1112 are provided, with the multiple explosion-proof valves 1112 respectively arranged around the cover plate 111 to improve the explosion-proof performance. For example, three explosion-proof valves 1112 are provided.

[0068] Furthermore, the welded parts 1111 and the explosion-proof valve 1112 are staggered to ensure that the entire cover plate 111 is subjected to balanced forces, thereby improving the gas flow within the housing 12.

[0069] In other embodiments, combined with Figure 10 As shown, the cover plate 111 is also provided with a liquid injection hole 1114 for liquid injection or venting.

[0070] Furthermore, the injection hole 1114 coincides with the axis of the battery cell 13, that is, the injection hole 1114 is located at the center of the cover plate 111 to ensure that the entire cover plate 111 is subjected to balanced forces.

[0071] Optionally, the cover plate 111 protrudes along the edge of the injection hole 1114 toward the direction of the cell 13 to form an injection boss, thereby further increasing the structural strength of the middle part of the cover plate 111.

[0072] In this embodiment, combined with Figures 7 to 9 As shown, a limiting part 1113 is also provided at the outer peripheral edge of the cover plate 111. The limiting part 1113 protrudes from the cover plate 111 towards the battery cell 13 to surround the second electrode tab 132. That is, the limiting part 1113 positions the second electrode tab 132, which not only strengthens the overall strength of the cover plate 111, but also facilitates accurate welding of the second electrode tab 132 and the welding part 1111. This avoids the second electrode tab 132 shifting due to force during welding, causing it to come into contact with the inner wall of the housing 12, resulting in poor welding and poor performance of the battery cell 13. In addition, since the limiting part 1113 can surround the second electrode tab 132, it can also prevent the second electrode tab 132 from breaking during the assembly of the battery cell 13.

[0073] Furthermore, the surface of the limiting part 1113 that contacts the second electrode tab 132 is inclined, that is, the cross section of the limiting part 113 gradually decreases from the second electrode tab 132 to the first electrode tab 131, so as to further improve the constraint ability of the second electrode tab 132 and avoid the second electrode tab 132 from shifting as much as possible.

[0074] Considering that after the battery cell 13 is placed into the housing 12 through the opening at the bottom of the housing 12, it needs to be covered and fixed at the opening by the cover plate 111, that is, the outer peripheral edge of the cover plate 111 and the bottom of the housing 12 are welded together by solder, so that the connection between the housing 12 and the cover plate 111 forms a solder part 14, thereby achieving a stable connection between the cover plate 111 and the housing 12.

[0075] Of course, combined Figures 10 to 12 As shown, in other embodiments, a first chamfer can be provided on the housing 12 along the edge of the opening, and a corresponding second chamfer can be provided on the cover plate 111. When the cover plate 111 and the housing 12 are welded together, a weld bead portion 15 can be formed at the connection between the housing 12 and the cover plate 111. This not only facilitates welding and reduces stress concentration, but also further improves the stability of the connection between the cover plate 111 and the housing 12.

[0076] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0077] The above description is only a preferred embodiment of the present invention. For those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of the present invention. The content of this specification should not be construed as a limitation of the present invention.

Claims

1. A cap assembly for a battery, the battery comprising a cell (13) and a housing (12) for receiving the cell (13), characterized in that, include: A cover plate (111) is disposed at the bottom end of the housing (12) and connected to the second electrode tab (132) of the battery cell (13); A busbar (112) is attached to the top of the battery cell (13) to connect with the first electrode tab (131) of the battery cell (13), and a terminal post is provided on the busbar (112); Terminal (113) is inserted through the top of the housing (12) and electrically connected to the busbar (112) through the pole post, and there is a gap between the top of the busbar (112) and the bottom of the terminal (113). The cap assembly also includes an energy-absorbing structure (114) which is connected to the terminal (113), the housing (12) and the manifold (112) respectively, and the energy-absorbing structure (114) is configured to allow a gap between the top of the manifold (112) and the bottom of the terminal (113).

2. The cap assembly according to claim 1, characterized in that, The energy-absorbing structure (114) includes a sealing ring (1141) and a plastic pad (1142). The sealing ring (1141) is located between the housing (12) and the terminal (113), and the plastic pad (1142) is located between the housing (12) and the manifold (112). The sealing ring (1141) passes through the plastic pad (1142).

3. The cap assembly according to claim 2, characterized in that, The edge of the plastic pad (1142) extends along the direction close to the manifold (112) to form an isolation part (11423). The plastic pad (1142) can cover the manifold (112) through the isolation part (11423), and the isolation part (11423) can fit against the inner wall of the housing (12).

4. The cap assembly according to any one of claims 1 to 3, characterized in that, The cover plate (111) is provided with a welding part (1111) and an explosion-proof valve (1112). The welding part (1111) protrudes from the cover plate (111) in a direction close to the battery cell (13), and the explosion-proof valve (1112) protrudes from the cover plate (111) in a direction away from the battery cell (13).

5. The cap assembly according to any one of claims 1 to 3, characterized in that, The cover plate (111) is provided with a liquid injection hole (1114), the liquid injection hole (1114) coincides with the axis of the battery cell (13), and the cover plate (111) protrudes along the edge of the liquid injection hole (1114) towards the battery cell (13) to form a liquid injection boss.

6. A battery, characterized in that, The battery includes a cell (13), a housing (12), and a cap assembly according to any one of claims 1 to 5, wherein the housing (12) is used to house the cell (13), and the cap assembly is connected to the cell (13) and the housing (12) respectively.

7. A battery module, characterized in that, The battery module includes a plurality of batteries as described in claim 6, wherein the plurality of batteries are arranged in multiple rows and columns.

8. A battery pack, characterized in that, It includes a housing and a battery module as described in claim 7, wherein the battery module is disposed within the housing.

9. A vehicle, characterized in that, It includes a vehicle body and a battery pack as described in claim 8, wherein the battery pack is disposed within the vehicle body.

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