Battery pack and vehicle

Abstract

The invention provides a battery pack and a vehicle, and relates to the technical field of batteries. According to the battery pack provided by the invention, the compensation assembly is detachably connected to the box body, so that when the battery pack is loosened and shaken in position in the mounting area of a vehicle, the battery pack can be supported in the mounting area through the compensation supporting part of the compensation assembly, and effective positioning is provided for the battery pack; the loosening and shaking amplitude of the battery pack in the mounting area is compensated, so that the mounting tightness of the battery pack is improved, and the influence on the stability of power transmission caused by shaking of the battery pack in the running process of an automobile is prevented.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and particularly to a battery pack and a vehicle. Background Art

[0002] A battery pack is a core component of a new energy vehicle, which is formed by arranging and combining multiple single cells into a module and encapsulating them together, then equipped with key components such as a battery management system, and covered with a strong outer shell protection structure on the outside.

[0003] The battery pack housing is the carrier and protection structure of the battery pack, mainly used to protect the lithium battery from being damaged when subjected to external collisions and squeezes. It plays a key role in the safe operation and protection of the battery module. Its material selection generally uses materials such as steel plates or aluminum alloys, and then the surface is sprayed. With the development of energy conservation, environmental protection and lightweight of automobiles, there are also various lightweight material options for battery housing materials, such as glass fiber reinforced composite materials, SMC sheet materials, carbon fiber reinforced composite materials, etc.

[0004] In related technologies, current new energy vehicles supplement the electrical energy of the vehicle or perform regular inspections and maintenance on the battery by means of battery swapping. However, after the power battery is frequently replaced, problems such as loosening of the installation bolts of the battery pack and wear of the fasteners will occur, which will lead to a decrease in the adaptability between the power battery and the chassis or the battery compartment, resulting in the battery pack being prone to shaking. Summary of the Invention

[0005] In view of this, the present application provides a battery pack and a vehicle, aiming to solve the above technical problems to a certain extent.

[0006] In the first aspect of the present application, a battery pack is provided. The battery pack is used for a vehicle, and the vehicle has an installation area for installing the battery pack. The battery pack includes:

[0007] A box body, the box body includes a first wall portion and a second wall portion that are oppositely arranged in a first direction, and the box body further includes a side portion disposed between the first wall portion and the second wall portion;

[0008] A plurality of single cells, the plurality of single cells are disposed in a space defined by the first wall portion, the second wall portion and the side portion;

[0009] A compensation component, the compensation component includes a compensation installation portion and a compensation support portion. The compensation installation portion is used for detachably connecting with the box body. The compensation support portion is located on a side of the compensation installation portion away from the box body. The compensation support portion can approach and move away from the box body, and the compensation support portion is used for supporting in the installation area.

[0010] Based on the above technical solutions, optionally, the battery pack includes an adapter member, the adapter member is detachably connected to the first wall portion and the second wall portion, the adapter member spans the side portion and is detachably connected to the side portion, the adapter member has a compensation connection area, and the compensation mounting portion is detachably connected to the compensation connection area.

[0011] Based on any of the above technical solutions, optionally, the compensation assembly includes a compensation fastening member, the compensation fastening member passes through the compensation mounting portion and the adapter member, and the compensation fastening member is detachably connected to the side portion.

[0012] Based on any of the above technical solutions, optionally, the number of the adapter members is multiple, at least some of the adapter members are provided with the compensation assembly, wherein the number of at least some of the adapter members is at least two.

[0013] Based on any of the above technical solutions, optionally, the battery pack further includes:

[0014] an external terminal, the external terminal is electrically connected to the plurality of single cells;

[0015] a transfer terminal, the transfer terminal is spaced apart from the external terminal and is electrically connected to the external terminal, and the transfer terminal can change its position in a manner staggered with the external terminal.

[0016] Based on any of the above technical solutions, optionally, the battery pack further includes a transfer line, the transfer line electrically connects the external terminal and the transfer terminal, and the transfer line extends in a coiled and / or meandering manner between the external terminal and the transfer terminal;

[0017] Wherein, the battery pack further includes a bent pipe member, the bent pipe member is sleeved outside the transfer line, and the cross-sectional area of one end of the bent pipe member close to the external terminal is larger than the cross-sectional area of the end close to the transfer terminal.

[0018] Based on any of the above technical solutions, optionally, the external terminal, the transfer line, and the bent pipe member are all arranged in the space defined by the first wall portion, the second wall portion, and the side portion.

[0019] Based on any of the above technical solutions, optionally, the compensation assembly further includes:

[0020] a first compensation member, the first compensation member is connected to the compensation mounting portion;

[0021] A second compensation member, which is connected to the compensation support portion and movably connected to the first compensation member so that the compensation support portion can approach and move away from the box body;

[0022] Wherein, one of the first compensation member and the second compensation member is sleeved outside the other of the first compensation member and the second compensation member.

[0023] Based on any of the above technical solutions, optionally, the first compensation member and the second compensation member are threadedly connected. The compensation assembly further includes a telescopic support member having two opposite ends. One of the two ends of the telescopic support member is connected to the first of the first compensation member and the second compensation member, and the other of the two ends of the telescopic support member abuts against the second of the first compensation member and the second compensation member, and the telescopic support member has a tendency to elongate.

[0024] A vehicle provided in the second aspect of the present application includes the battery pack as described above.

[0025] According to the battery pack provided by the present application, the compensation assembly can be detachably connected to the box body. When the battery pack has problems of looseness and shaking in the installation area of the vehicle, it can be supported in the installation area by the compensation support portion of the compensation assembly, providing effective positioning for the battery pack and compensating for the amplitude of looseness and shaking of the battery pack in the installation area, thereby improving the fastening of the battery pack installation and being beneficial to preventing the stability of power transmission from being affected due to shaking during the operation of the vehicle.

[0026] To make the above objects, features, and advantages of the present application more obvious and understandable, the following specific embodiments are given, and in conjunction with the accompanying drawings, the detailed description is as follows. Description of the Drawings

[0027] To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 A schematic diagram showing a three-dimensional view of the battery pack provided by the embodiment of the present application.

[0029] Figure 2 A schematic diagram showing a three-dimensional view of the battery pack omitting the first wall portion provided by the embodiment of the present application.

[0030] Figure 3 A schematic diagram showing a three-dimensional view of a battery pack omitting a first wall portion and an adapter member according to an embodiment of the present application.

[0031] Figure 4 A schematic diagram showing a three-dimensional view of a battery pack body of a battery pack according to an embodiment of the present application.

[0032] Figure 5 A schematic diagram showing a three-dimensional view of an external terminal and an adapter terminal of a battery pack according to an embodiment of the present application.

[0033] Figure 6 A schematic diagram showing a three-dimensional view of a compensation component of a battery pack according to an embodiment of the present application.

[0034] Figure 7 A schematic diagram showing another three-dimensional view of a compensation component of a battery pack according to an embodiment of the present application.

[0035] Figure 8 A schematic diagram showing a cross-sectional view of a first compensation member and a second compensation member of a compensation component of a battery pack according to an embodiment of the present application. Detailed implementation manners

[0036] The technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0037] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0039] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0040] According to a first aspect of an embodiment of the present application, a battery pack is provided. The structure and working principle of the battery pack will be specifically described below. Figures 1 to 8 Specifically describe the structure and working principle of the battery pack.

[0041] According to the battery pack provided by the embodiment of the present application, the battery pack is used for a vehicle, and the vehicle has an installation area for installing the battery pack. The battery pack includes a box body, a plurality of single cells, and a compensation component. In the embodiment, the box body includes a first wall portion and a second wall portion that are oppositely arranged in a first direction, and the box body further includes a side portion disposed between the first wall portion and the second wall portion.

[0042] In the embodiment, the plurality of single cells are disposed in the space defined by the first wall portion, the second wall portion, and the side portion. In the embodiment, the compensation component includes a compensation installation portion and a compensation support portion. The compensation installation portion is used for detachably connecting with the box body. The compensation support portion is located on the side of the compensation installation portion away from the box body. The compensation support portion can approach and move away from the box body, and the compensation support portion is used for supporting in the installation area.

[0043] Thus, according to the battery pack provided by the embodiment of the present application, the compensation component is detachably connected to the box body. When there are problems such as looseness and shaking in the position of the battery pack in the installation area of the vehicle, the compensation support portion of the compensation component can support in the installation area, provide effective positioning for the battery pack, and compensate for the amplitude of looseness and shaking of the battery pack in the installation area, thereby improving the fastening of the battery pack installation and being beneficial to preventing the stability of power transmission from being affected due to shaking during the operation of the vehicle.

[0044] According to the battery pack provided by the embodiments of the present application, the battery pack may include an adapter member. The adapter member may be detachably connected to the first wall portion and the second wall portion. The adapter member may span the side portion and be detachably connected to the side portion. The adapter member may have a compensation connection area, and the compensation mounting portion may be detachably connected to the compensation connection area.

[0045] Thus, according to the battery pack provided by the embodiments of the present application, the battery pack is detachably connected to the first wall portion, the second wall portion, and the side portion through the adapter member, so that the whole box body is detachable, which is beneficial to the replacement of structures such as the first wall portion, the second wall portion, and the side portion in the box body. At the same time, the adapter member also provides a compensation connection area for the compensation mounting portion, which is equivalent to reusing the adapter member. That is, the adapter member not only acts as a connection structure for forming the box body, but also has the function of providing an installation position for the compensation component. Therefore, the reuse of components is realized, which is beneficial to the battery pack having a compact structure.

[0046] In addition, according to the battery pack provided by the embodiments of the present application, the adapter member also plays an insulating role. Here, as an example, the adapter member prevents the compensation component from being directly connected to the box body, which is beneficial to increasing the insulation performance of the battery pack relative to the external environment, especially the installation area of the battery pack in the vehicle. That is to say, the use of the adapter member prevents connectors such as screws from directly penetrating into the interior of the battery pack. Such connectors not only do not have insulation performance due to their own metal materials, but when too many of them penetrate into the box body, it may cause the distance between the connectors and the single cells in the battery pack to be too close. In addition, when the battery pack is subjected to an external impact, it is also not conducive to keeping the distance between the single cells in the battery pack and the connectors. In other words, the adapter member not only plays a role in preventing too many connectors from penetrating into the box body to reduce the electrical insulation performance, but also can form a buffer between the single cells and the connectors.

[0047] According to the battery pack provided by the embodiments of the present application, the compensation component may include a compensation fastening member. The compensation fastening member may penetrate through the compensation mounting portion and the adapter member, and the compensation fastening member may be detachably connected to the side portion. In the embodiment, it is equivalent to connecting the compensation mounting portion and the adapter member to the side portion of the box body of the battery pack through the same connection structure, which effectively reduces the complexity of the battery pack.

[0048] According to the battery pack provided in the embodiment of the present application, the number of adapter components can be multiple, and compensation components are provided on at least some of the adapter components, wherein the number of at least some of the adapter components is at least two, thereby ensuring that at least two compensation components can compensate for the looseness and shaking space of the battery pack in a more effective manner. For example, when the compensation directions of two compensation components intersect, it can ensure that the position of the battery pack can be freely adjusted in the horizontal plane, so as to obtain compensation for any margin, because when the two compensation directions intersect, the required compensation margin can be synthesized by adjustment.

[0049] According to the battery pack provided in the embodiment of the present application, the battery pack also includes an external terminal and a transfer terminal. In the embodiment, the external terminal is electrically connected to the above-mentioned multiple single cells. The transfer terminal can be spaced apart from the external terminal and electrically connected to the external terminal. The transfer terminal can change its position in a staggered manner with the external terminal. In this way, the position of the terminal of the battery pack electrically connected to the outside can also be adjusted through the transfer terminal. After the battery pack is set in the installation area, the position of the transfer terminal of the battery pack can be fine-tuned according to actual conditions, thereby further improving the adaptability of the battery pack.

[0050] According to the battery pack provided in the embodiment of the present application, the battery pack also includes a transfer circuit, the transfer circuit electrically connects the external terminal and the transfer terminal, and the transfer circuit extends in a winding and / or meandering manner between the external terminal and the transfer terminal. In an embodiment, the battery pack may also include a bending tube member, and the bending tube member may be sleeved on the outside of the transfer circuit, and the cross-sectional area of ​​the end of the bending tube member close to the external terminal is larger than the cross-sectional area of ​​the end close to the transfer terminal. Therefore, when the transfer terminal moves relative to the external terminal, since the bending tube member is relatively thicker on the external terminal side, it is less likely to bend and deform. On the contrary, it is more likely to bend and deform because it is relatively thinner on the transfer terminal side.

[0051] Therefore, the closer the side of the transfer circuit is to the external terminal, the smaller the movement amplitude is. This part of the circuit has relatively small movement, which helps to avoid failure of the external terminal and the transfer circuit due to fatigue after multiple large-scale movements, resulting in a decrease in the electrical insulation performance of the battery pack.

[0052] According to the battery pack provided in the embodiment of the present application, the external terminals, the switching circuits and the bent tube components are all arranged in a space defined by the first wall portion, the second wall portion and the side portion, thereby shielding the external terminals, the switching circuits and the bent tube components, thereby enhancing the electrical insulation performance of the battery pack.

[0053] According to the battery pack provided by the embodiment of the present application, the compensation component may further include a first compensation member and a second compensation member. In the embodiment, the first compensation member is connected to the compensation mounting portion, the second compensation member is connected to the compensation support portion, and the second compensation member is movably connected to the first compensation member, so that the compensation support portion can approach and move away from the box body.

[0054] In the embodiment, one of the first compensation member and the second compensation member is sleeved outside the other one of the first compensation member and the second compensation member. Thus, even at the limit position where the compensation support portion can move away from the box body between the first compensation member and the second compensation member, due to the existence of the sleeving relationship, the stability of the connection between the first compensation member and the second compensation member can be ensured.

[0055] According to the battery pack provided by the embodiment of the present application, the first compensation member and the second compensation member are threadedly connected, and the compensation component may further include a telescopic support member. The telescopic support member has two opposite ends. One of the two ends of the telescopic support member is connected to the first one of the first compensation member and the second compensation member, and the other one of the two ends of the telescopic support member abuts against the second one of the first compensation member and the second compensation member. The telescopic support member has a tendency to elongate. In the embodiment, the telescopic support member always provides a pre-tightening force for the first compensation member and the second compensation member, thereby avoiding the shaking of the first compensation member relative to the second compensation member.

[0056] The embodiment of the present application aims to provide a battery pack that can improve the assembly tightness between the battery pack and the vehicle chassis or the battery compartment (that is, the installation area for installing the battery pack on the vehicle mentioned above), can improve the adaptability of the battery pack to the vehicle by changing the number, position of the fastening structure and replacing related components, and at the same time change the terminal position of the battery pack to obtain higher assembly flexibility.

[0057] The specific installation method of the embodiment of the present application is as follows. Sealing plates 2 are placed on the top and bottom of the side shell 1. The battery pack body 3 is installed inside the space surrounded by the side shell 1 and the two sealing plates 2. A plurality of uniformly distributed threaded holes 101 are provided on the opposite sides of the two sealing plates 2 and on both sides of the side shell 1. The upper and lower sealing plates 2 are respectively fixed to the top and bottom of the side shell 1 through a plurality of C-shaped fastening plates 5 and a first fastening bolt group 6.

[0058] In an embodiment, a C-shaped fastening plate 5 corresponds to four first fastening bolt groups 6 and four threaded holes 101. Two of the four threaded holes 101 are located on the side housing 1, and the remaining two threaded holes 101 are respectively located on the two sealing plates 2. One side of one or more C-shaped fastening plates 5 is provided with a first mounting plate 7. The first mounting plate 7 is matched with the threaded holes 101 at corresponding positions through two second fastening bolt groups 8, so that the first mounting plate 7 is fixed on one side of the C-shaped fastening plate 5.

[0059] In an embodiment, an adjusting screw cylinder 9 is fixedly installed on one side of the first mounting plate 7. An adjusting screw rod 10 is screwed inside the adjusting screw cylinder 9. One end of the adjusting screw rod 10 is rotatably installed with a rotating joint 11. One end of the rotating joint 11 is installed with a second mounting plate 12. The rotating joint 11 is rotatably connected to the second mounting plate 12.

[0060] In an embodiment, a top plate 13 is installed on the second mounting plate 12 through two third fastening bolt groups 14. A limiting telescopic rod 15 is installed between the first mounting plate 7 and the second mounting plate 12. One end of the adjusting screw rod 10 is sleeved with a protective sleeve 16, and the other end of the protective sleeve 16 is sleeved on the adjusting screw cylinder 9.

[0061] In this way, the first mounting plate 7, the adjusting screw cylinder 9, the adjusting screw rod 10, the rotating joint 11 and the second mounting plate 12, the top plate 13, the limiting telescopic rod 15 and the protective sleeve 16 constitute a fastening structure. By setting the fastening structure, when the side housing 1, the sealing plate 2 and the internal battery pack body 3 are installed inside the vehicle chassis or the battery compartment, if the battery as a whole is prone to looseness and shaking, a corresponding number of multiple fastening structures can be respectively installed at the corresponding positions on both sides of the sealing plate 2, and the protective sleeve 16 is rotated to drive the adjusting screw rod 10 to rotate, so that the adjusting screw rod 10 moves spirally in the adjusting screw cylinder 9, thereby adjusting the distance between the top plate 13 and the first mounting plate 7, so that the top plate 13 can finally press against the side wall of the chassis or the battery compartment, playing a limiting role on the whole battery pack, improving the fastening of the battery pack installation, and preventing the stability of power transmission from being affected due to shaking during the operation of the vehicle.

[0062] In an embodiment, the first mounting plate 7 is assembled with the C-shaped fastening plate 5 through the second fastening bolt group 8, and the top plate 13 is assembled with the second mounting plate 12 through the third fastening bolt group 14, so that both the first mounting plate 7 and the top plate 13 are detachable structures. Therefore, according to the shape and position of the actual vehicle chassis and battery compartment, the quantity and position of the first mounting plate 7 and the top plate 13 can be adjusted. At the same time, the top plate 13 can be replaced with different shapes to make the top plate 13 more fit the internal structure of the battery compartment, thereby obtaining more stable support and improving the adaptability of the battery pack.

[0063] In the embodiment, by arranging the protective sleeve 16, the protective sleeve 16 can wrap the adjusting screw 10 and the connection between the adjusting screw 10 and the adjusting screw barrel 9 inside, thereby providing dust and moisture-proof protection for the threaded meshing of the adjusting screw 10 and the adjusting screw barrel 9, avoiding the influence of environmental factors on the meshing transmission of the adjusting screw barrel 9 and the adjusting screw 10, and extending the service life of the adjusting screw barrel 9 and the adjusting screw 10. By arranging the C-shaped fastening plate 5, the C-shaped fastening plate 5 can not only lock the two sealing plates 2 at the top and bottom of the side shell 1, but also provide an installation position for the fastening structure.

[0064] In the embodiment of the present application, an external terminal 4 is installed on one side of the battery pack body 3, the side shell 1 is a C-shaped structure, the opening of the side shell 1 corresponds to the position of the external terminal 4, and a transfer socket 17 is plugged into the external terminal 4, and the transfer socket 17 is installed with a transfer terminal 19 through a transmission line 18.

[0065] In the embodiment, an assembly plate 20 is sleeved on the adapter terminal 19, and threaded holes are provided on both sides of the opening of the side shell 1. The same slide plate 21 is slidably installed inside the two threaded holes. An assembly hole is provided in the middle of the slide plate 21, and the assembly plate 20 is located inside the assembly hole. C-shaped clamping plates 22 are placed on the top and bottom of the slide plate 21. The two C-shaped clamping plates 22 are fixed to the slide plate 21 by a fourth fastening bolt group 23, and the assembly plate 20 is restricted inside the assembly hole by the two C-shaped clamping plates 22.

[0066] In the embodiment, two slide bars 24 are fixed on the outward side of the slide plate 21, and two horizontal long slide holes 103 are provided on the outward side of the two slide grooves 102. The two slide bars 24 are respectively located inside the two slide grooves 102, and a fastening screw 25 is installed on the outward end of the slide bar 24, and a fastening nut 26 is screwed on one end of the fastening screw 25. By setting the slide bar 24, the adapter terminal 19 is assembled with the slide plate 21 through the assembly plate 20, the C-shaped clamping plate 22 and the fourth fastening bolt group 23, so that the adapter terminal 19 can move together with the slide plate 21.

[0067] Therefore, when installing the battery pack, the slide plate 21 can be slid according to the internal conditions of the vehicle chassis and the battery compartment, thereby driving the adapter terminal 19 to move horizontally, changing the position of the adapter terminal 19, and using the fastening nut 26 to screw it onto the fastening screw 25 and contact the side wall of the side shell 1, thereby locking the slide plate 21 to fix the position of the adapter terminal 19. In the embodiment, the adapter terminal 19 is electrically connected to the external terminal 4 on one side of the battery pack body 3 through the transmission line 18 and the adapter socket 17, so that the vehicle can be connected to the external terminal 4 through the adapter terminal 19, so that the terminal position of the battery pack can be fine-tuned according to the actual situation, further improving the adaptability of the battery pack.

[0068] In the embodiment of the present application, a connecting screw ring 27 is installed on one side of the battery pack body 3, the external terminal 4 is located inside the connecting screw ring 27, a folding elbow 28 is installed on one side of the assembly plate 20, the power transmission line 18 is located inside the folding elbow 28, and one end of the folding elbow 28 is screwed onto the connecting screw ring 27.

[0069] In the embodiment, the inner diameter of one end of the folding elbow 28 facing the assembly plate 20 gradually decreases, so that one end of the folding elbow 28 is funnel-shaped. By providing the folding elbow 28, the folding elbow 28 wraps the power transmission line 18, the adapter socket 17 and the external terminal 4 inside, thereby protecting the power transmission line 18, the adapter socket 17 and the external terminal 4, restricting the power transmission line 18, reducing the shaking amplitude of the power transmission line 18, and ensuring the stability of the connection between the adapter socket 17 and the external terminal 4, thus improving the stability of power transmission of the battery pack.

[0070] According to the second aspect of the embodiment of the present application, a vehicle is provided. The vehicle includes the battery pack as described above and also has the above beneficial effects, which will not be elaborated here. In the embodiment, the vehicle can be, for example, a new energy vehicle, the battery pack is a substantial power battery pack, and at least part of the power of the vehicle can come from the battery pack.

[0071] The above are only the preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Any equivalent structural transformation made by using the description and drawings of the present application under the innovative concept of the present application, or directly / indirectly applied in other related technical fields, is included in the protection scope of the present application.

Claims

1. A battery pack, characterized in that, The battery pack is for a vehicle, and the vehicle has an installation area for installing the battery pack. The battery pack includes: A box body, the box body includes a first wall portion and a second wall portion that are oppositely arranged in a first direction, and the box body further includes a side portion disposed between the first wall portion and the second wall portion; A plurality of single cells, the plurality of single cells are disposed in a space defined by the first wall portion, the second wall portion, and the side portion; A compensation assembly, the compensation assembly includes a compensation installation portion and a compensation support portion. The compensation installation portion is used for detachably connecting with the box body. The compensation support portion is located on a side of the compensation installation portion away from the box body. The compensation support portion can approach and move away from the box body, and the compensation support portion is used for supporting in the installation area.

2. The battery pack according to claim 1, wherein The battery pack includes an adapter member, the adapter member detachably connects the first wall portion and the second wall portion, the adapter member spans the side portion and is detachably connected with the side portion, and the adapter member has a compensation connection area, and the compensation installation portion is detachably connected to the compensation connection area.

3. The battery pack according to claim 2, wherein, The compensation assembly includes a compensation fastening member, the compensation fastening member passes through the compensation installation portion and the adapter member, and the compensation fastening member is detachably connected to the side portion.

4. The battery pack according to claim 2, wherein The number of the adapter members is multiple, and at least part of the adapter members are provided with the compensation assembly, wherein the number of the at least part of the adapter members is at least two.

5. The battery pack according to claim 1, characterized in that, The battery pack further includes: External terminals, the external terminals are electrically connected to the plurality of single cells; Adapter terminals, the adapter terminals are spaced from the external terminals and are electrically connected to the external terminals, and the adapter terminals can change positions in a manner staggered with the external terminals.

6. The battery pack according to claim 5, characterized in that, The battery pack further includes an adapter line, the adapter line electrically connects the external terminals and the adapter terminals, and the adapter line extends in a coiled and / or meandering manner between the external terminals and the adapter terminals; Wherein, the battery pack further includes a bent pipe member, the bent pipe member is sleeved outside the adapter line, and a cross-sectional area of one end of the bent pipe member close to the external terminals is larger than a cross-sectional area of one end close to the adapter terminals.

7. The battery pack according to claim 6, wherein, The external terminals, the adapter line, and the bent pipe member are all disposed in a space defined by the first wall portion, the second wall portion, and the side portion.

8. The battery pack according to claim 1, characterized in that, The compensation assembly further includes: A first compensation member, the first compensation member is connected to the compensation installation portion; A second compensation member, the second compensation member is connected to the compensation support portion, and the second compensation member is movably connected to the first compensation member so that the compensation support portion can approach and move away from the box body; Wherein, one of the first compensation member and the second compensation member is sleeved outside the other of the first compensation member and the second compensation member.

9. The battery pack according to claim 8, characterized in that, The first compensation member and the second compensation member are threadedly connected. The compensation assembly further includes a telescopic support member having two ends opposite to each other. One of the two ends of the telescopic support member is connected to a first one of the first compensation member and the second compensation member, and the other of the two ends of the telescopic support member abuts against a second one of the first compensation member and the second compensation member. The telescopic support member has a tendency to elongate.

10. A vehicle, characterized in that, The vehicle includes the battery pack according to any one of claims 1 to 9.

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