Battery pack and vehicle
By setting a jumper above the cell module in the battery pack, the problem of space occupation by the jumper aluminum bar is solved, achieving higher space utilization and capacity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-03-03
AI Technical Summary
The bridging aluminum bar occupies space in the parallel direction of the battery cells, resulting in less space for the battery cell module to install the battery cells and lower space utilization.
The first and second jumpers are both located above the cell module, electrically connecting adjacent cell modules and cell arrays within the same cell module, thus avoiding occupying space along the length of the cell array.
This increases the installation space for battery cells, expands the capacity of battery cell modules, and improves space utilization.
Smart Images
Figure CN223967336U_ABST
Abstract
Description
Technical Field
[0001] This application relates to battery pack technology, and more particularly to a battery pack and a vehicle. Background Technology
[0002] In recent years, the electric vehicle industry has developed rapidly. As an important component of electric vehicles, the battery pack not only affects the performance and safety of electric vehicles, but also directly impacts their market competitiveness and sustainable development.
[0003] In related technologies, a battery pack includes multiple cell modules, each cell module includes multiple parallel cell rows, each cell row includes multiple parallel battery cells, and adjacent cell rows within a cell module are electrically connected at their ends by a bridging aluminum bar, the bridging aluminum bar being located in the parallel direction of the battery cells and extending outward toward the cell row.
[0004] However, the bridging aluminum bar occupies too much space in the parallel direction of the battery cells, resulting in less space for the battery cell module to install the battery cells and a lower space utilization rate. Utility Model Content
[0005] In view of this, this application provides a battery pack and vehicle designed to reduce the space occupied by the crossover aluminum bus and improve space utilization.
[0006] To achieve the above objectives, this application provides a battery pack and vehicle, which adopt the following technical solution:
[0007] In a first aspect, this application provides a battery pack, comprising:
[0008] At least two cell modules, each cell module comprising two cell arrays;
[0009] The first jumper is used to electrically connect two adjacent cell rows located in different cell modules, so that the two adjacent cell modules are connected end to end.
[0010] The second jumper is used to electrically connect two battery cell rows located within the same battery cell module;
[0011] Both the first jumper and the second jumper are located above the battery cell module.
[0012] In one possible implementation, the battery pack provided in this application has the first jumper and the second jumper located at both ends of the same cell module along a first direction.
[0013] The projection of the second jumper toward the cell module to which it is electrically connected is located inside the cell module.
[0014] In one possible implementation, the battery pack provided in this application includes a battery cell array comprising a plurality of battery cells arranged side by side along the first direction;
[0015] Two battery cell rows within the same battery cell module are arranged side by side along a second direction, wherein the first direction is perpendicular to the second direction.
[0016] In one possible implementation, the battery pack provided in this application includes a second jumper comprising a first connecting portion, a second connecting portion, and a first jumper portion;
[0017] The first connecting portion and the second connecting portion are connected by the first bridging portion;
[0018] The first connecting portion and the second connecting portion are disposed at the same end of the two cell blocks along the first direction, and are connected in series with the two cell blocks in the same cell module;
[0019] The first bridging portion is located between the two battery cells and protrudes toward the battery cells from the first connecting portion and the second connecting portion.
[0020] In one possible implementation, the battery pack provided in this application includes a first jumper comprising a third connecting portion, a fourth connecting portion, and a second jumper portion;
[0021] The third connecting part and the fourth connecting part are connected by the second bridging part;
[0022] The third connecting part and the fourth connecting part are respectively electrically connected to the electrodes of the two battery cells on the opposite ends of the two battery cell rows, so as to connect the two opposite battery cell rows in the two battery cell modules connected end to end in series;
[0023] The second bridging portion is located between the two battery cells and protrudes toward the battery cells from the third and fourth connecting portions.
[0024] In one possible implementation, the battery pack provided in this application has a positioning portion on the second bridging portion;
[0025] There is a gap between two opposing cell rows in two connected cell modules, and the positioning part is inserted into the gap.
[0026] In one possible implementation, the battery pack provided in this application has the positioning portion protruding from the second bridging portion, and the positioning portion extending along the length direction of the gap.
[0027] In one possible implementation, the battery pack provided in this application has at least one of the first connecting portion, the second connecting portion, the third connecting portion, and the fourth connecting portion welded to the electrode of the corresponding battery cell.
[0028] In one possible implementation, the battery pack provided in this application has the first connecting portion, the second connecting portion, and the first bridging portion integrally formed;
[0029] And / or,
[0030] The third connecting part, the fourth connecting part, and the second bridging part are integrally formed.
[0031] Secondly, this application provides a vehicle, including a vehicle body and the aforementioned battery pack disposed on the vehicle body.
[0032] This application provides a battery pack and a vehicle, wherein the battery pack includes at least two cell modules, each cell module including two cell rows; a first jumper for electrically connecting two adjacent cell rows located in different cell modules, so that the two adjacent cell modules are connected end-to-end; a second jumper for electrically connecting two cell rows located in the same cell module; both the first jumper and the second jumper are located above the cell modules. By setting both the first jumper and the second jumper to be above the cell modules, the first jumper and the second jumper are avoided from occupying space along the length direction of the cell rows. It can be understood that the length direction of the cell rows is the parallel direction of the battery cells. Compared with related technologies, this provides installation space for more battery cells, improves space utilization, and thus increases the capacity of the cell modules.
[0033] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the technical solutions provided by this application, other technical features contained in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description
[0034] The specific embodiments of this application are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of this application, and this application is not limited to the specific embodiments described below.
[0035] Figure 1 This is a partial structural diagram of a battery pack provided in an embodiment of this application;
[0036] Figure 2 for Figure 1 A magnified structural diagram of part A in the middle;
[0037] Figure 3 for Figure 1 A magnified structural diagram of part B.
[0038] Explanation of reference numerals in the attached figures:
[0039] 10. Cell module; 20. Cell array; 30. Battery cell; 40. Gap;
[0040] 100, First bridging member; 110, Third connecting part; 120, Fourth connecting part; 130, Second bridging part; 140, Positioning part; 200, Second bridging member; 210, First connecting part; 220, Second connecting part; 230, First bridging part; 300, Welding hole.
[0041] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation
[0042] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.
[0043] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0044] In the description of the embodiments of this application, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.
[0045] In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise specified precisely.
[0046] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
[0047] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.
[0048] As mentioned in the background section, the electric vehicle industry has developed rapidly in recent years. As an important component of electric vehicles, the battery pack is not only related to the performance and safety of electric vehicles, but also directly affects the market competitiveness and sustainable development of electric vehicles.
[0049] In related technologies, a power battery pack (PACK), also known as a power battery stack, comprises multiple cell modules. Each cell module includes multiple cell rows arranged in parallel, and each cell row includes multiple battery cells arranged in parallel. The number of battery cells arranged in parallel significantly affects the capacity of the cell module. Assuming the capacity of a single battery cell remains constant, the more battery cells arranged in parallel within a cell row, the larger the capacity of the cell module.
[0050] Within the battery cell module, two adjacent cell arrays are electrically connected at their ends via bridging aluminum bars. These bridging aluminum bars are located in the parallel direction of the battery cells and extend outwards from the cell array. Of course, these bridging aluminum bars can also be bridging copper bars or bridging alloy bars, their function being to electrically connect the cell arrays. This application embodiment does not limit the specific material of this part; only the bridging aluminum bar is used as an example for illustration.
[0051] However, the bridging aluminum bar occupies too much space in the parallel direction of the battery cells, resulting in less space for the battery cell module to install the battery cells and a lower space utilization rate.
[0052] Based on the aforementioned technical problems, this application provides a battery pack and a vehicle. In this technical solution, the battery pack includes at least two cell modules, each cell module comprising two cell rows; a first jumper is disposed between two adjacent cell modules and is used to electrically connect two adjacent cell rows located within different cell modules, so that the adjacent cell modules are connected end-to-end; a second jumper is used to electrically connect two cell rows located within the same cell module; both the first and second jumpers are located above the cell modules. By positioning both the first and second jumpers above the cell modules, the first and second jumpers avoid occupying space along the length of the cell rows. It can be understood that the length direction of the cell rows is the parallel direction of the battery cells. Compared to related technologies, this provides installation space for more battery cells, improves space utilization, and thus increases the capacity of the cell modules.
[0053] It should be noted that the vehicle in this application can refer to large vehicles, small vehicles, special-purpose vehicles, etc. For example, according to vehicle type, the vehicle in this application can be a sedan, an off-road vehicle, a multi-purpose vehicle (MPV), or other types of vehicles. Generally, a vehicle is equipped with wheels, a power source, and a transmission system between the wheels and the power source. The transmission system can transmit the power provided by the power source to the wheels, causing the wheels to rotate and thus driving the vehicle.
[0054] Figures 1 to 3 This diagram illustrates a simplified representation of the battery pack and various components within the vehicle. The specific structures of the battery pack and other components in the vehicle are not limited to these examples. Figures 1 to 3 of examples.
[0055] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments:
[0056] Reference Figure 1 , Figure 2 and Figure 3 As shown, the battery pack provided in this application embodiment includes at least two cell modules 10. Of course, the specific number of cell modules 10 can be determined according to actual needs. This application embodiment does not limit the specific number of cell modules 10, nor does it limit the connection method between the cell modules 10 and the vehicle.
[0057] The cell module 10 includes two cell arrays 20.
[0058] The first jumper 100 is disposed between two adjacent cell modules 10 and is used to electrically connect two adjacent cell arrays 20 located in different cell modules 10, so that the two adjacent cell modules 10 are connected end to end. Since the cell module 10 includes two cell arrays 20, and the two cell arrays 20 are integrated into the cell module 10, they have two externally connected electrodes. At this time, the first jumper 100 is connected to each electrode, so the number of the first jumper 100 can be set to two. Of course, the number of cell arrays 20 in the cell module 10 can also be an even number such as 4, 6, 8, etc., to ensure that the externally connected electrodes of the cell module 10 are located at the same end of the cell module 10.
[0059] The second jumper 200 is used to electrically connect two cell arrays 20 located within the same cell module 10; both the first jumper 100 and the second jumper 200 are located above the cell module 10.
[0060] In the above embodiment, by setting the first jumper 100 and the second jumper 200 to be located above the cell module 10, the first jumper 100 and the second jumper 200 are prevented from occupying the space in the length direction of the cell array 20. It can be understood that the length direction of the cell array 20 is the parallel direction of the battery cells 30. Compared with related technologies, it can provide installation space for more battery cells 30, improve space utilization, and thus increase the capacity of the cell module 10.
[0061] In a specific implementation, the first jumper 100 and the second jumper 200 are located at the two ends of the same cell module 10 along the first direction.
[0062] The projection of the second jumper 200 toward the cell module 10 to which it is electrically connected is located inside the cell module 10.
[0063] This configuration allows the second jumper 200 to electrically connect the two cell arrays 20 at the end of the cell module 10 without occupying space along the length of the cell arrays 20.
[0064] In one possible implementation, two cell arrays 20 within the same cell module 10 have electrodes close to each other at their ends. The two ends of the first jumper 100 are electrically connected to the electrodes close to each other at the ends of the two cell arrays 20, which can save the manufacturing material of the second jumper 200 and reduce costs.
[0065] In one possible implementation, the cell array 20 includes a plurality of battery cells 30 arranged side by side along a first direction.
[0066] Two cell arrays 20 within the same cell module 10 are arranged side by side along the second direction, with the first direction perpendicular to the second direction.
[0067] Specifically, refer to Figure 1 As shown, the first direction is Figure 1 The direction indicated by the middle X arrow, the second direction is Figure 1 The direction is indicated by the Y-arrow. The battery cell 30 can be a blade battery, with its electrodes located on the same side for easy installation and maintenance. The height direction of each battery cell 30 is... Figure 1 The direction indicated by the Z-arrow.
[0068] The battery cell 30 can be a lithium battery, which has a high energy density and can increase the capacity of the cell module 10.
[0069] The electrical connections between the individual battery cells 30 are existing technologies, and will not be described in detail in this embodiment. By arranging multiple battery cells 30 along a first direction and the cell array 20 along a second direction, the space in the first and second directions within the battery pack can be fully utilized, avoiding the situation where the cell module 10 is too long or too wide in one direction. This allows for the arrangement of as many battery cells 30 as possible within the limited space of the battery pack, thereby increasing the capacity of the cell module 10.
[0070] It should be noted that the first jumper 100 and the second jumper 200 are both located in the Z direction of the cell module 10 to avoid occupying the space on the periphery of the cell module 10.
[0071] In one possible implementation, please continue to refer to Figure 1 and Figure 2 The second bridging member 200 includes a first connecting part 210, a second connecting part 220 and a first bridging part 230.
[0072] The first connecting part 210 and the second connecting part 220 are connected by the first bridging part 230.
[0073] The first connecting part 210 and the second connecting part 220 are disposed at the same end of the two cell blocks 20 along the first direction, and are connected in series with the two cell blocks 20 in the same cell module 10.
[0074] The first bridging portion 230 is located between the two battery cells 30 and protrudes toward the battery cells 30 from the first connecting portion 210 and the second connecting portion 220.
[0075] In related technologies, the electrodes of the battery cell 30 typically protrude from the battery cell 30. There is a certain gap between the two electrodes of two adjacent battery cells 30 used for series connection. By setting a first bridging portion 230 protruding between the two battery cells 30, specifically, the first bridging portion 230 protrudes into the gap. When installing the second bridging member 200, the first bridging portion 230 needs to be inserted into the gap, which has a quick positioning effect for the installation of the second bridging member 200, improves installation efficiency, and ensures the stability of the second bridging member 200.
[0076] In one possible implementation, please continue to refer to Figure 1 and Figure 3 The first bridging member 100 includes a third connecting part 110, a fourth connecting part 120, and a second bridging part 130.
[0077] The third connecting part 110 and the fourth connecting part 120 are connected by the second bridging part 130.
[0078] The third connecting part 110 and the fourth connecting part 120 are electrically connected to the electrodes of the two battery cells 30 on the opposite ends of the two cell arrays 20, respectively, so as to connect the two opposite cell arrays 20 in the two cell modules 10 connected end to end in series.
[0079] The second bridging portion 130 is located between the two battery cells 30 and protrudes toward the battery cells 30 from the third connecting portion 110 and the fourth connecting portion 120.
[0080] By setting the second crossover portion 130 to protrude between the two battery cells 30, the installation of the first crossover portion 100 can be quickly positioned.
[0081] Reference Figure 1 As shown, in one possible implementation, the number of battery cells 30 in the cell array 20 is an even number, such as any number among 6, 8, 10, and 12. In this embodiment, each cell array 20 contains 10 battery cells 30. Each battery cell 30 is connected in series so that each end of the cell array 20 in the first direction has an electrode, and the line connecting these two electrodes is parallel to the first direction. The line connecting the electrodes at the ends of two opposite cell arrays 20 in two connected cell modules 10 forms an angle with the first direction. This arrangement is applicable to cell modules 10 with an even number of battery cells 30, improving the space utilization rate within the cell module 10.
[0082] In one possible implementation, the second bridging portion 130 has a positioning portion 140.
[0083] There is a gap 40 between two opposing cell rows 20 in two cell modules 10 connected end to end, and the positioning part 140 is inserted into the gap 40.
[0084] In the above embodiment, by setting the positioning part 140, the positioning part 140 is inserted into the gap 40. When installing the first cross-connector 100, the positioning part 140 can be inserted into the gap 40, thereby improving the positioning accuracy of the first cross-connector 100 and also having the effect of quick positioning and installation.
[0085] To further improve the rapid positioning and installation effect of the first crossover 100, the positioning part 140 protrudes from the second crossover part 130 and extends along the length direction of the gap 40. Specifically, it extends in the Y direction, and the positioning part 140 is in the shape of a boss and is recessed inside the gap 40. By setting the positioning part 140 to extend along the length direction of the gap 40, the positioning part 140 is more prominent, facilitating rapid positioning. At the same time, the positioning part 140 gives the second crossover part 130 better toughness, which helps to improve the strength of the first crossover 100 and extend its service life.
[0086] In one possible implementation, at least one of the first connecting portion 210, the second connecting portion 220, the third connecting portion 110, and the fourth connecting portion 120 is welded to the electrode of the corresponding battery cell 30. Specifically, the first connecting portion 210, the second connecting portion 220, the third connecting portion 110, and the fourth connecting portion 120 are provided with welding holes 300 to facilitate the welding of the first connecting portion 210, the second connecting portion 220, the third connecting portion 110, and the fourth connecting portion 120 to the electrode of the corresponding battery cell 30 through the welding holes 300 after the first connecting portion 210, the second connecting portion 220, the third connecting portion 110, and the fourth connecting portion 120 to the electrode of the corresponding battery cell 30.
[0087] To improve the strength and hardness of the first crossover 100 and the second crossover 200, the first connecting portion 210, the second connecting portion 220 and the first crossover portion 230 are integrally formed; and / or, the third connecting portion 110, the fourth connecting portion 120 and the second crossover portion 130 are integrally formed.
[0088] Specifically, the integral molding technology in this application embodiment can be achieved by pre-setting a molding mold and then pouring liquid molten alloy into the molding mold to complete the casting. Of course, other forms of integral molding technology are also possible. This application embodiment does not specifically limit the integral molding method. Integral molding enables the first cross-connector 100 and the second cross-connector 200 to have a compact structure and reliable quality. Furthermore, integral molding can improve the overall performance of the first cross-connector 100 and the second cross-connector 200, thereby extending their service life.
[0089] In one possible implementation, this application also provides a vehicle, including a vehicle body and the aforementioned battery pack, the battery pack being disposed on the vehicle body. The specific structure of the battery pack has been described above and will not be repeated here. The vehicle provided by this application embodiment possesses all the beneficial technical effects of the aforementioned battery pack.
[0090] The implementation principle of a battery pack and vehicle according to an embodiment of this application is as follows: The battery pack provided in this embodiment includes at least two cell modules 10, and each cell module 10 includes two cell rows 20; a first jumper 100 is disposed between two adjacent cell modules 10 and is used to electrically connect two adjacent cell rows 20 located in different cell modules 10, so that the two adjacent cell modules 10 are connected end to end; a second jumper 200 is used to electrically connect two cell rows 20 located in the same cell module 10; both the first jumper 100 and the second jumper 200 are located above the cell modules 10. By setting the first jumper 100 and the second jumper 200 to be located above the cell module 10, the first jumper 100 and the second jumper 200 are prevented from occupying the space along the length of the cell array 20. It can be understood that the length of the cell array 20 is the parallel direction of the battery cells 30. Compared with related technologies, it can provide installation space for more battery cells 30, improve space utilization, and thus increase the capacity of the cell module 10.
[0091] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein.
[0092] The embodiments in this application are intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed in this application. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this application are indicated by the claims.
[0093] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.
Claims
1. A battery pack, characterized by, The application relates to a battery cell module. The application comprises: at least two battery cell modules (10), each comprising two battery cell rows (20); a first cross-connection (100) for electrically connecting two adjacent battery cell rows (20) in different battery cell modules (10) to make the two adjacent battery cell modules (10) connect end to end; a second cross-connection (200) for electrically connecting two battery cell rows (20) in the same battery cell module (10); 2. The battery pack of claim 1, wherein, the first cross-connection (100) and the second cross-connection (200) are both located above the battery cell module (10). the first cross-connection (100) and the second cross-connection (200) are respectively located at two ends of the same battery cell module (10) along a first direction; 3. The battery pack of claim 2, wherein, a projection of the second cross-connection (200) towards the battery cell module (10) to which the second cross-connection (200) is electrically connected is located inside the battery cell module (10). the battery cell row (20) comprises a plurality of battery cells (30) arranged side by side along the first direction; 4. The battery pack of claim 3, wherein, two battery cell rows (20) in the same battery cell module (10) are arranged side by side along a second direction, and the first direction is perpendicular to the second direction. the second cross-connection (200) comprises a first connecting part (210), a second connecting part (220) and a first cross-connection part (230); the first connecting part (210) and the second connecting part (220) are connected through the first cross-connection part (230); the first connecting part (210) and the second connecting part (220) are arranged at the same end of the two battery cell rows (20) along the first direction, and are connected in series with the two battery cell rows (20) in the same battery cell module (10); 5. The battery pack of claim 4, wherein, the first cross-connection part (230) is located between two battery cells (30) and protrudes from the first connecting part (210) and the second connecting part (220) towards the battery cells (30). the first cross-connection (100) comprises a third connecting part (110), a fourth connecting part (120) and a second cross-connection part (130); the third connecting part (110) and the fourth connecting part (120) are connected through the second cross-connection part (130); the third connecting part (110) and the fourth connecting part (120) are respectively electrically connected with electrodes of two battery cells (30) on opposite ends of two battery cell rows (20) to connect two opposite battery cell rows (20) in two battery cell modules (10) that connect end to end in series; 6. The battery pack of claim 5, wherein, the second cross-connection part (130) is located between two battery cells (30) and protrudes from the third connecting part (110) and the fourth connecting part (120) towards the battery cells (30). the second cross-connection part (130) has a positioning part (140); two opposite battery cell rows (20) in two battery cell modules (10) that connect end to end have a gap (40), and the positioning part (140) is arranged in the gap (40).
7. The battery pack of claim 6, wherein, The positioning portion (140) protrudes from the second bridging portion (130), and the positioning portion (140) extends along the length direction of the gap (40).
8. The battery pack of any one of claims 5-7, wherein, At least one of the first connecting portion (210), the second connecting portion (220), the third connecting portion (110), and the fourth connecting portion (120) is welded to an electrode of the corresponding battery cell (30).
9. The battery pack of any one of claims 5-7, wherein, The first connecting portion (210), the second connecting portion (220), and the first bridging portion (230) are integrally formed; And / or, The third connecting portion (110), the fourth connecting portion (120), and the second bridging portion (130) are integrally formed.
10. A vehicle characterized by comprising: A battery pack as claimed in any one of claims 1 to 9 is arranged on a vehicle body.