Box assembly, battery pack and vehicle

Abstract

The present invention relates to the field of vehicle technology and discloses a box assembly, a battery pack and a vehicle, wherein the box assembly has a receiving cavity for accommodating the battery assembly, the box assembly has a vehicle body mounting portion, the vehicle body mounting portion is suitable for being connected to the vehicle body, and the box assembly also has at least one of a suspension arm mounting portion, a steering gear mounting portion, a stabilizer bar mounting portion, a drive mounting portion and a shock absorber mounting portion. According to the box assembly of the present invention, it is easy to achieve a high degree of integration and electric capacity.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a box assembly, a battery pack and a vehicle. Background Art

[0002] Battery packs are an integral and important part of vehicles and energy storage systems, and their design and manufacturing involve many aspects. The degree of integration of battery packs and their capacity will limit the use of battery packs.

[0003] For this reason, there is room for improvement in the design of the battery pack. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a box assembly, which facilitates achieving a higher degree of integration and electrical capacity. The present invention also proposes a battery pack having the above box assembly. The present invention also proposes a vehicle having the above battery pack.

[0005] According to the box assembly of the first aspect embodiment of the present invention, the box assembly is used for a battery pack, the box assembly has a accommodating cavity for accommodating the battery assembly of the battery pack, the box assembly has a vehicle body mounting portion, the vehicle body mounting portion is suitable for being connected to the vehicle body, and the box assembly also has at least one of a suspension arm mounting portion, a steering gear mounting portion, a stabilizer bar mounting portion, a drive mounting portion and a shock absorber mounting portion.

[0006] According to the box assembly of the embodiment of the present invention, by arranging the box assembly to also have at least one of a suspension arm mounting portion, a steering gear mounting portion, a stabilizer bar mounting portion, a drive mounting portion and a shock absorber mounting portion, the box assembly can participate in the installation of at least one of the suspension control arm, the steering gear, the stabilizer bar, the drive assembly and the shock absorber, which is beneficial to improving the integration of the box assembly, enriching the functions of the box assembly, facilitating the integrated setting of other components (such as a subframe, etc.) and the box assembly, and is beneficial to improving the strength and torsional resistance of the vehicle chassis. At the same time, other components can be simplified and a certain space can be freed up for the box assembly, which is convenient for increasing the capacity of the battery pack.

[0007] In some embodiments, at least one of a suspension arm mounting portion and a shock absorber mounting portion is formed on the box assembly, and the at least one of the suspension arm mounting portion and the shock absorber mounting portion is located on the left side or the right side of the box assembly; and / or, at least one of a steering gear mounting portion, a drive mounting portion and a stabilizer bar mounting portion is formed on the box assembly, and at least one of the steering gear mounting portion, the drive mounting portion and the stabilizer bar mounting portion is located on the upper side of the box assembly.

[0008] In some embodiments, a drive mounting portion is formed on the box assembly, and an avoidance groove is formed on the upper surface of the box assembly.

[0009] In some embodiments, the box assembly includes a box that surrounds the accommodating cavity, the drive mounting portion is protruded from the upper side of the box, a first mounting hole is formed on the drive mounting portion, and the first mounting hole is spaced apart above the box.

[0010] In some embodiments, the box assembly includes a box, which includes a bottom plate, a top plate and a frame that surround the accommodating cavity, the frame is annular and connected between the top plate and the bottom plate, and the box assembly is configured to satisfy at least one of the following conditions: the vehicle body mounting portion is formed on the frame; at least one of a suspension arm mounting portion and a shock absorber mounting portion is formed on the box assembly, and at least one of the suspension arm mounting portion and the shock absorber mounting portion is formed on the frame; at least one of a steering gear mounting portion and a stabilizer bar mounting portion is formed on the box assembly, and the box assembly also includes a bracket, which is accommodated in the accommodating cavity and connected to the box, and at least one of the steering gear mounting portion and the stabilizer bar mounting portion is formed on the bracket.

[0011] In some embodiments, the frame includes a plurality of side beams connected end to end in sequence, and the connection position of two adjacent side beams forms a corner portion. The vehicle body mounting portions are multiple and include: a plurality of first mounting portions, each of the corner portions having a first mounting portion; and / or, a plurality of second mounting portions, a plurality of second mounting portions are respectively formed on the two side beams arranged opposite to each other.

[0012] In some embodiments, the plurality of vehicle body mounting portions further include a third mounting portion, and the third mounting portion is protruded from the upper side of the top plate.

[0013] In some embodiments, the box assembly includes a bracket, which includes at least one of a crossbeam, a longitudinal beam and a support column, the crossbeam extends in the left-right direction and its two ends are respectively connected to the frame, the longitudinal beam extends in the front-back direction and its two ends are respectively connected to the frame, and the support column extends vertically and its two ends are respectively connected to the bottom plate and the top plate.

[0014] In some embodiments, at least one of a steering gear mounting portion and a stabilizer bar mounting portion is formed on the box assembly, and at least one of the steering gear mounting portion and the stabilizer bar mounting portion is formed as a second mounting hole.

[0015] In some embodiments, the box assembly includes a first part and a second part, the second part is provided on at least one side of the first part in the front-to-back direction, the lower surface of the first part and the lower surface of the second part are arranged flush, the multiple suspension arm mounting parts include a fourth mounting part and / or a fifth mounting part, the fourth mounting part is used to mount the suspension upper swing arm or the suspension lower swing arm, the fifth mounting part is used to mount the suspension longitudinal arm, in the left and right direction, the width of the second part is smaller than the width of the first part, at least one of the steering gear mounting part, the stabilizer bar mounting part, the drive mounting part and the shock absorber mounting part is formed on the second part, in the up and down direction, the height of the second part is greater than or equal to the height of the first part, the fourth mounting part is formed on the second part; and / or the fifth mounting part is formed on the side wall of the second part adjacent to the rear side of the first part.

[0016] In some embodiments, the upper surface of at least one of the second parts is flush with the upper surface of the first part, and the fourth mounting portion on the at least one second part is used for the lower arm of the suspension; and / or, at least a portion of the upper surface of at least one of the second parts is higher than the upper surface of the first part, and the fourth mounting portion on the upper part of at least one of the second parts is used to mount the upper arm of the suspension, and the fourth mounting portion on the lower part of at least one of the second parts is used to mount the lower arm of the suspension; and / or, at least a portion of the upper surface of at least one of the second parts is higher than the upper surface of the first part, and the shock absorber mounting portion is located at the upper part of the second part.

[0017] In some embodiments, the second parts are respectively provided on the front and rear sides of the first part, one of the second parts has a drive mounting portion and its upper surface is flush with the upper surface of the first part, and at least part of the upper surface of the other second part is higher than the upper surface of the first part.

[0018] In some embodiments, the box assembly includes a box that surrounds the accommodating cavity, at least one of the suspension arm mounting portions is a mounting groove formed on the outer surface of the box body, a third mounting hole is formed on the groove wall of the mounting groove, or a fourth mounting hole is formed on the outer surface of the box body corresponding to the peripheral side of the mounting groove; and / or at least one of the suspension arm mounting portions is a mounting bracket protruding from the outer surface of the box body, and an avoidance space is defined between the mounting bracket and the outer surface of the box body.

[0019] In some embodiments, at least one of the suspension arm mounting portions is formed as a mounting groove, a third mounting hole is formed on the groove wall of the mounting groove, and the third mounting holes are respectively formed on the upper and lower groove walls of the mounting groove; or, the mounting groove passes through the lower surface of the box body, and the third mounting hole is formed on the upper groove wall or the lower groove wall of the mounting groove.

[0020] A battery pack according to an embodiment of a second aspect of the present invention comprises a battery assembly and a box assembly according to an embodiment of the first aspect of the present invention, wherein the battery assembly comprises a plurality of battery cells and is disposed in the accommodating cavity.

[0021] The battery pack according to the embodiment of the present invention, by adopting the above-mentioned box assembly, is beneficial to improving the integration and capacity of the battery pack.

[0022] A vehicle according to an embodiment of a third aspect of the present invention comprises a battery pack according to an embodiment of the second aspect of the present invention.

[0023] The vehicle according to the embodiment of the present invention, by adopting the above-mentioned battery pack, is beneficial to improving the vehicle's endurance and reliability.

[0024] In some embodiments, the vehicle includes two front wheels spaced apart from each other on the left and right and two rear wheels spaced apart from each other on the left and right, the box assembly includes a first part and a second part, the second part is provided on at least one side of the first part in the front-to-back direction, at least one of the suspension arm mounting part, the steering gear mounting part, the stabilizer bar mounting part, the drive mounting part and the shock absorber mounting part is formed on the second part, and in the left-to-right direction, the width of the second part is less than or equal to the width of the first part, the width of the second part located in front of the first part is less than the spacing between the two front wheels; and / or the width of the second part located behind the first part is less than the spacing between the two rear wheels.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 is a schematic diagram of a box assembly according to some embodiments of the present invention;

[0028] Figure 2 yes Figure 1 The enlarged view of the part A shown in the middle circle;

[0029] Figure 3 yes Figure 1 Schematic diagram of the box assembly, suspension control arm and steering knuckle shown in ;

[0030] Figure 4 yes Figure 1 Another schematic diagram of the box assembly and the suspension control arm and steering knuckle described in ;

[0031] Figure 5 is a schematic diagram of a box assembly and a suspension control arm, a steering knuckle, a steering gear, and a stabilizer bar according to some embodiments of the present invention;

[0032] Figure 6 is a schematic diagram of a box assembly and a diverter according to some embodiments of the present invention;

[0033] Figure 7 is a schematic diagram of a box assembly and a stabilizing bar according to some embodiments of the present invention;

[0034] Figure 8 is a schematic diagram of a box assembly, a suspension control arm, a steering knuckle, and a drive assembly according to some embodiments of the present invention;

[0035] Fig. 9 is a partial schematic diagram of a box assembly according to some embodiments of the present invention;

[0036] Fig.10 is a schematic diagram of a box assembly, a suspension control arm, and a steering knuckle according to some embodiments of the present invention;

[0037] Fig.11 is a schematic diagram of a box assembly, a suspension control arm, and a steering knuckle according to some embodiments of the present invention;

[0038] Fig.12 is a schematic diagram of a box assembly and a suspension control arm according to some embodiments of the present invention;

[0039] Fig.13 yes Fig.12 An enlarged view of the circled section B;

[0040] Fig.14 yes Fig.12 The enlarged view of the C section circled in the middle;

[0041] Fig.15 is a schematic diagram of a box assembly and a suspension control arm according to some embodiments of the present invention;

[0042] Fig.16 yes Fig.15 An enlarged view of the D section circled in the middle;

[0043] Fig.17 yes Fig.15 The enlarged view of the E part circled in the middle;

[0044] Fig.18 is a schematic diagram of a box assembly according to some embodiments of the present invention;

[0045] Fig.19 yes Fig.18 The enlarged view of the F part circled in the middle;

[0046] Fig. 20 yes Fig.18 Schematic diagram of the box assembly, suspension control arm and shock absorber shown in ;

[0047] Fig.21 yes Fig. 20 The enlarged view of the G section circled in the middle;

[0048] Fig. 22 is a schematic diagram of a vehicle according to some embodiments of the present invention.

[0049] Reference numerals:

[0050] Vehicle 300, battery pack 200, vehicle body 201, suspension control arm 202, suspension upper swing arm 2021, suspension lower swing arm 2022, suspension trailing arm 2023, steering gear 203, stabilizer bar 204, drive assembly 205, output end 2051, shock absorber 206, front wheel 207, rear wheel 208, steering knuckle 209, bushing 210, control arm mounting bracket 211, box assembly 100, first part R1, second part R2, main body R21, protruding part R22, convex beam R221, vehicle body mounting part 100a, suspension arm mounting part 100b, steering gear mounting part 100c, Stabilizer bar mounting part 100d, drive mounting part 100e, shock absorber mounting part 100f, avoidance groove 100g, first mounting part 100h, second mounting part 100i, third mounting part 100j, first mounting hole 100k, second mounting hole 100l, fourth mounting part 100m, fifth mounting part 100n, mounting groove 100o, third mounting hole 100p, fourth mounting hole 100q, mounting bracket 100r, transition bracket 100s, box body 1, accommodating cavity 10, bottom plate 11, top plate 12, frame 13, corner part 131a, bracket 2, cross beam 21, and longitudinal beam 22. DETAILED DESCRIPTION

[0051] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0052] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific processes and examples of materials, but those of ordinary skill in the art can be aware of the applicability of other processes and / or the use of other materials.

[0053] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0054] The following describes a box assembly 100 according to an embodiment of the present invention with reference to the accompanying drawings. The box assembly 100 is used for a battery pack 200, which may also include a battery assembly. The box assembly 100 has a receiving cavity 10 for accommodating the battery assembly, so that the box assembly 100 plays a protective and supporting role for the battery assembly.

[0055] like Figure 1 , Figure 3-Figure 6 and Figure 8 As shown, the box assembly 100 has a body mounting portion 100a, and the body mounting portion 100a is suitable for connecting with the body 201. When the box assembly 100 is used in the vehicle 300, the box assembly 100 can be connected with the body 201 through the body mounting portion 100a, so as to realize the installation of the box assembly 100 and the installation of the battery pack 200. It can be understood that the body mounting portion 100a can be directly connected to the body 201, and can also be indirectly connected to the body 201 through other components.

[0056] The box assembly 100 also has at least one of a suspension arm mounting portion 100b, a steering gear mounting portion 100c, a stabilizer bar mounting portion 100d, a drive mounting portion 100e, and a shock absorber mounting portion 100f, so as to realize that at least one of the suspension arm mounting portion 100b, the steering gear mounting portion 100c, the stabilizer bar mounting portion 100d, the drive mounting portion 100e, and the shock absorber mounting portion 100f is integrated and arranged on the box assembly 100, which is beneficial to improve the integration of the box assembly 100 and enrich the functions of the box assembly 100. Among them, the suspension arm mounting portion 100b is used to install the suspension control arm 202, the steering gear mounting portion 100c is used to install the steering gear 203, the stabilizer bar mounting portion 100d is used to install the stabilizer bar 204, the drive mounting portion 100e is used to install the suspension of the drive assembly 205, and the output shaft of the drive assembly 205 (the output shaft is arranged at Figure 8 The output end 2051 in the output port 205 is suitable for being connected to the wheel power, and the shock absorber mounting portion 100f is used for mounting the shock absorber 206.

[0057] It can be understood that the suspension arm mounting portion 100b can be directly connected to the suspension control arm 202, or indirectly connected to the suspension control arm 202 through other components (the components can be used only to achieve the connection between the suspension arm mounting portion 100b and the suspension control arm 202, such as the transition bracket 100s described later). The steering gear mounting portion 100c can be directly connected to the steering gear 203, or indirectly connected to the steering gear 203 through other components (the components can be used only to achieve the connection between the steering gear mounting portion 100c and the steering gear 203), so as to provide a mounting position for the steering gear 203. The stabilizer bar mounting portion 100d can be directly connected to the stabilizer bar 204, or indirectly connected to the stabilizer bar 204 through other components, so as to provide a mounting position for the stabilizer bar 204. The drive mounting portion 100e can be directly connected to the suspension of the drive assembly 205, or indirectly connected through other components (the components can be used only to achieve the connection between the drive mounting portion 100e and the suspension). The shock absorber mounting portion 100f may be directly connected to the shock absorber 206, or may be indirectly connected via other components (the components may only be used to achieve the connection between the shock absorber mounting portion 100f and the shock absorber 206). Thus, the box assembly 100 may provide a mounting position for at least one of the suspension control arm 202, the steering gear 203, the stabilizer bar 204, the suspension of the drive assembly 205, and the shock absorber 206.

[0058] It should be noted that, in the embodiment of the present application, the suspension control arm 202 (also referred to as the suspension swing arm) plays an important role in the suspension system, and can be a guide and force transmission element, transmitting various forces acting on the wheel to the vehicle body 201, ensuring that the wheel moves along a certain trajectory, and the wheel and the vehicle body 201 can be elastically connected by a ball joint or a bushing, etc., to reduce vibration transmission and improve operational stability (for example, Figure 3-Figure 5The middle suspension control arm 202 is connected to the steering knuckle 209 through a bushing or a ball joint, and the steering knuckle 209 is connected to the wheel); the suspension control arm 202 may include an upper swing arm, a lower swing arm and a longitudinal arm. The upper swing arm is the guide and support of the suspension, and its deformation affects the positioning of the wheel. The lower swing arm is mainly used to support the vehicle body 201, the shock absorber 206 and buffer vibration, etc. The longitudinal arm is responsible for the swing of the wheel in the longitudinal plane of the vehicle. The steering gear 203 is the core component of the steering system. Its main function is to appropriately transform the torque and steering angle transmitted by the driver through the steering wheel, and then output it to the steering rod mechanism, so that the vehicle 300 can steer according to actual needs; the structural form and position of the steering gear 203 are not limited in the embodiment of the present application. For example, the steering gear 203 can be arranged in front of the corresponding wheel center, or behind the corresponding wheel center. The stabilizer bar 204 (also called an anti-roll bar or a balance bar, which can be understood as a stabilizer bar assembly) is an auxiliary elastic element in the suspension system, which is mainly used to prevent the vehicle body 201 from excessive lateral roll when turning, so as to keep the vehicle body 201 balanced as much as possible. Generally, the stabilizer bar 204 is U-shaped, and the front and rear ends of the vehicle body 201 are respectively provided with a horizontal stabilizer bar 204, and the two ends of the stabilizer bar 204 can be connected to the wheels respectively through the suspension control arm 202 (such as the suspension lower arm), the steering knuckle 209, the shock absorber 206, etc.; in the embodiment of the present application, there is no restriction on the structural form and position of the stabilizer bar 204, for example, the stabilizer bar 204 can be an active stabilizer bar 204, etc., and the stabilizer bar 204 can be arranged in front of the corresponding wheel center, or at the rear of the corresponding wheel center. The drive assembly 205 can generate power and transmit the power to the wheels to drive the vehicle 300. For example, for a pure electric vehicle 300, the drive assembly 205 may include a transmission, etc. For a fuel vehicle 300 or a hybrid vehicle 300, the drive assembly 205 may also include an engine. The suspension of the drive assembly 205 is used to reduce and control the transmission of the vibration of the drive assembly 205 and play a supporting role. For example, the suspension may include at least one of a rubber suspension, a hydraulic suspension, and an air suspension, etc., which can reduce the impact of the vibration of the drive assembly 205 on the battery assembly in the box assembly 100. The shock absorber 206 is connected to the wheels and reduces the vibration and impact caused by the uneven road surface when the vehicle is driving through the damping effect, thereby improving the stability and comfort of the vehicle.

[0059] In the related art, the suspension arm mounting part, the steering gear mounting part, the stabilizer bar mounting part, the drive mounting part and the shock absorber mounting part are all arranged on other parts of the vehicle except the battery pack. For example, the suspension arm mounting part, the steering gear mounting part, the stabilizer bar mounting part and the drive mounting part are usually formed on an independently arranged subframe, and the shock absorber mounting part is usually formed on a subframe or a vehicle body. In the embodiment of the present application, at least one of the suspension arm mounting part 100b, the steering gear mounting part 100c, the stabilizer bar mounting part 100d, the drive mounting part 100e and the shock absorber mounting part 100f is formed on the box assembly 100, so that the box assembly 100 can replace at least part of the other parts of the vehicle 300 to realize the installation of the corresponding parts, so that the above-mentioned other parts of the vehicle 300 do not need to be provided with corresponding installation functions. The structures of the above-mentioned other components and the structure of the vehicle 300 can be simplified, which is beneficial to reducing manufacturing costs, and can free up layout space for the box assembly 100, thereby increasing the accommodating space of the internal accommodating cavity 10 of the box assembly 100, and accommodating a larger number and / or larger volume of battery cells in the box assembly 100, thereby increasing the capacity of the battery pack 200 and improving the endurance of the vehicle 300.

[0060] In addition, since the box assembly 100 can replace at least part of the above-mentioned other components of the vehicle 300 (such as the subframe, the body 201, etc.), it is convenient to realize the integrated setting of the above-mentioned other components and the box assembly 100, which is beneficial to improve the structural strength and torsional resistance of the chassis of the vehicle 300 and enhance the reliability of the vehicle 300.

[0061] Take the case assembly 100 used in the vehicle 300 as an example. For example, the case assembly 100 has a suspension arm mounting portion 100b and a steering gear mounting portion 100c, and the vehicle 300 also includes a subframe, and the subframe has a stabilizer bar mounting portion 100d and a drive mounting portion 100e. At this time, for the manner in which the suspension arm mounting portion 100b and the steering gear mounting portion 100c are formed on the subframe in the related art, in the above-mentioned scheme of the present application, the case assembly 100 can replace a part of the subframe, so that a part of the subframe is integrated with the case assembly 100, which is convenient for improving the strength and torsion resistance of the chassis of the vehicle 300. At the same time, the subframe can free up a certain space for the case assembly 100 so as to increase the space of the accommodating chamber 10. For another example, the case assembly 100 has a suspension arm mounting portion 100b, a steering gear mounting portion 100c, a stabilizer bar mounting portion 100d and a drive mounting portion 100e. At this time, compared with the method in the related art that only the suspension arm mounting part 100b, the steering gear mounting part 100c, the stabilizer bar mounting part 100d and the drive mounting part 100e are set on the subframe, in the above scheme of the present application, the box assembly 100 can completely replace the subframe. At this time, the subframe can be omitted to achieve the integration of the subframe and the box assembly 100, which can also improve the strength and torsion resistance of the chassis of the vehicle 300 and increase the space of the accommodating cavity 10. For another example, the box assembly 100 has a suspension arm mounting part 100b, a stabilizer bar mounting part 100d and a shock absorber mounting part 100f, and the vehicle 300 also includes a subframe, and the subframe has a steering gear mounting part 100c and a drive mounting part 100e. At this time, compared with the method in the related art where the suspension arm mounting portion 100b and the stabilizer bar mounting portion 100d are formed on the sub-frame and the shock absorber mounting portion 100f is formed on the vehicle body 201, in the above solution of the present application, the box assembly 100 can replace a part of the sub-frame and a part of the vehicle body 201, so as to realize the integrated arrangement of a part of the sub-frame, a part of the vehicle body 201 and the box assembly 100. For another example, the box assembly 100 has a suspension arm mounting portion 100b, a steering gear mounting portion 100c, a stabilizer bar mounting portion 100d, a drive mounting portion 100e and a shock absorber mounting portion 100f. At this time, compared with the related art in which only the suspension arm mounting part 100b, the steering gear mounting part 100c, the stabilizer bar mounting part 100d and the drive mounting part 100e are arranged on the subframe, and the shock absorber mounting part 100f is formed on the vehicle body 201, in the above scheme of the present application, the box assembly 100 can replace a part of the vehicle body 201 and the subframe, thereby realizing the integrated arrangement of a part of the vehicle body 201, the subframe and the box assembly 100.

[0062] According to the box assembly 100 of the embodiment of the present invention, by arranging the box assembly 100 to also have at least one of the suspension arm mounting part 100b, the steering gear mounting part 100c, the stabilizer bar mounting part 100d, the drive mounting part 100e and the shock absorber mounting part 100f, the box assembly 100 can participate in the installation of at least one of the suspension control arm 202, the steering gear 203, the stabilizer bar 204, the drive assembly 205 and the shock absorber 206, which is beneficial to improving the integration of the box assembly 100, enriching the functions of the box assembly 100, and facilitating the integrated setting of other components (such as a subframe, etc.) and the box assembly 100, which is beneficial to improving the chassis strength and torsional resistance of the vehicle 300. At the same time, other components can be simplified and a certain space can be freed up for the box assembly 100, which is convenient for increasing the capacity of the battery pack 200.

[0063] In addition, in the above solution of the present application, there is no need to change the structure of at least one of the suspension control arm 202, the steering gear 203, the stabilizer bar 204, the drive assembly 205 and the shock absorber 206, which is convenient for simplifying the design.

[0064] It is understood that in the embodiment of the present application, the number of at least one of the suspension arm mounting portion 100b, the steering gear mounting portion 100c, the stabilizer bar mounting portion 100d, the drive mounting portion 100e and the shock absorber mounting portion 100f on the box assembly 100 is not specifically limited. For example, the suspension arm mounting portion 100b on the box assembly 100 may be one or more, the steering gear mounting portion 100c on the box assembly 100 may be one or more, the stabilizer bar mounting portion 100d on the box assembly 100 may be one or more, the drive mounting portion 100e on the box assembly 100 may be one or more, and the shock absorber mounting portion 100f on the box assembly 100 may be one or more.

[0065] In addition, when the box assembly 100 is used in the vehicle 300, for the suspension arm mounting portion 100b, all the suspension control arms 202 in the vehicle 300 can be mounted on the box assembly 100. Alternatively, a portion of the suspension control arms 202 in the vehicle 300 is mounted on the box assembly 100. In other words, the number of suspension arm mounting portions 100b on the box assembly 100 can be configured to be used to mount at least a portion of the suspension control arms 202 in the vehicle 300. The same is true for the steering gear mounting portion 100c, the stabilizer bar mounting portion 100d, the shock absorber mounting portion 100f, etc., which will not be repeated. For example, in terms of the suspension control arm 202, the vehicle 300 has a front suspension and a rear suspension, and then there are a front suspension control arm 202 and a rear suspension control arm 202. Then the suspension arm mounting portion 100b corresponding to the front suspension control arm 202 and / or the rear suspension control arm 202 is formed on the box assembly 100. At this time, the box assembly 100 can integrate at least part of the front subframe and / or at least part of the rear subframe. For example, if the vehicle 300 has multiple front suspension control arms 202, then at least one suspension arm mounting portion 100b corresponding to the front suspension control arm 202 is formed on the box assembly 100.

[0066] It can be seen that in the embodiment of the present application, based on the installation positions of the suspension control arm 202, the steering gear 203, the stabilizer bar 204, the drive assembly 205, and the shock absorber 206 in the vehicle 300, the box assembly 100 can be used to realize the installation of at least one of the above components, so that the box assembly 100 can integrate at least part of the functions of the front subframe, and / or, integrate at least part of the functions of the rear subframe, and / or, integrate part of the functions of the vehicle body 201, so that at least part of the front subframe, and / or, cancel at least part of the rear subframe, and / or, cancel part of the vehicle body 201 in the vehicle 300, simplify the structure of the vehicle 300, and reduce costs. For example, when the box assembly 100 integrates the entire front subframe, and / or, integrates the entire rear subframe, the front subframe and / or the rear subframe can be canceled, the number of components of the vehicle 300 is reduced, the assembly process is simplified, and it is beneficial to reduce the weight of the vehicle 300 and facilitate lightweight design. At this time, according to the increase in the volume of the box assembly 100, it can be simply inferred that for front and rear dual-motor models, the power can be increased by 30%~50%, and for single-motor or hub motor models, the power can be increased by 50%~100%.

[0067] In some embodiments, Figure 1-Figure 5As shown, at least one of a suspension arm mounting portion 100b and a shock absorber mounting portion 100f is formed on the box assembly 100. At least one of the suspension arm mounting portion 100b and the shock absorber mounting portion 100f is located on the left side or the right side of the box assembly 100. The position of the suspension arm mounting portion 100b and / or the shock absorber mounting portion 100f on the box assembly 100 is reasonable, which facilitates the connection of the box assembly 100 with other components, and is also beneficial in that there is no need to change the position of the corresponding suspension control arm 202 and the corresponding shock absorber 206 due to the improvement of the box assembly 100, which facilitates further reducing costs and improving the applicability of the box assembly 100. And / or, as Figure 5-Figure 8 As shown, at least one of a steering gear mounting portion 100c, a drive mounting portion 100e and a stabilizer bar mounting portion 100d is formed on the box assembly 100. At least one of the steering gear mounting portion 100c, the drive mounting portion 100e and the stabilizer bar mounting portion 100d is located on the upper side of the box assembly 100. The positions of the steering gear mounting portion 100c, the drive mounting portion 100e and the stabilizer bar mounting portion 100d on the box assembly 100 are reasonable, which is convenient for connecting the box assembly 100 with other components, and is also beneficial for not having to change the positions of the corresponding steering gear 203, the drive assembly 205 and the stabilizer bar 204 due to the improvement of the box assembly 100, which is convenient for further reducing costs and improving the applicability of the box assembly 100.

[0068] It can be understood that when the box assembly 100 is formed with a suspension arm mounting portion 100b, corresponding to a single suspension arm mounting portion 100b, it is located on the left or right side of the box assembly 100. If there are multiple suspension arm mounting portions 100b, the multiple suspension arm mounting portions 100b can all be located on the left or right side of the box assembly 100. Alternatively, at least one suspension arm mounting portion 100b is located on the left side of the box assembly 100, and the remaining suspension arm mounting portions 100b are located on the right side of the box assembly 100. Similarly, when a shock absorber mounting portion 100f is formed on the box assembly 100, corresponding to a single shock absorber mounting portion 100f, it is located on the left or right side of the box assembly 100. If there are multiple shock absorber mounting portions 100f, the multiple shock absorber mounting portions 100f can all be located on the left or right side of the box assembly 100. Alternatively, at least one shock absorber mounting portion 100 f is located on the left side of the box assembly 100 , and the remaining shock absorber mounting portions 100 f are located on the right side of the box assembly 100 .

[0069] For example, in Figure 1 In the example, the box assembly 100 has two suspension arm mounting parts 100b on the left and right sides respectively. Figure 3 Each suspension arm mounting portion 100b is used to mount a suspension lower arm 2022. Figure 4The two suspension arm mounting portions 100b on the same side are used to mount a suspension lower arm 2022, and at this time, the suspension lower arm 2022 can be roughly Y-shaped.

[0070] In some embodiments, Figure 1 and Figure 8 As shown, a drive mounting portion 100e is formed on the box assembly 100. The drive mounting portion 100e is located on the upper side of the box assembly 100, and an avoidance groove 100g is formed on the upper surface of the box assembly 100, and the avoidance groove 100g can be used to avoid the drive assembly 205. Then a part of the drive assembly 205 can extend into the avoidance groove 100g, which is conducive to lowering the height position of the drive assembly 205 and the height position of the output shaft of the drive assembly 205, thereby helping to reduce the vertical height difference between the output shaft and the wheel center, improve the vertical matching of the output shaft and the wheel, appropriately reduce the transmission shaft angle, improve the transmission stability and reliability, and facilitate power output. Exemplarily, the box assembly 100 includes a box 1, and the box 1 includes a bottom plate 11, a top plate 12 and a frame 13 that surround the accommodating cavity 10. The frame 13 is annular and connected between the top plate 12 and the bottom plate 11 . The top plate 12 may be located on the upper side of the bottom plate 11 , and the avoidance groove 100 g is formed on the top plate 12 .

[0071] In some embodiments, Figure 1 and Figure 2 As shown, the box assembly 100 includes a box body 1 that encloses a receiving cavity 10. The drive mounting portion 100e protrudes from the upper side of the box body 1, and a first mounting hole 100k is formed on the drive mounting portion 100e. The first mounting hole 100k can be used to install the suspension for the purpose of suspension installation; the first mounting hole 100k is arranged above the box body 1 at intervals, and the space between the first mounting hole 100k and the box body 1 can be used to place a part of the drive assembly 205, which is convenient for realizing the smooth installation of the drive assembly 205 and is not easy to restrict the structure of the drive assembly 205. If a avoidance groove 100g for avoiding the drive assembly 205 is formed on the box assembly 100, it is beneficial to reduce the depth of the avoidance groove 100g, and it is convenient to reduce the weakening of the box assembly 100 due to the setting of the avoidance groove 100g.

[0072] In some embodiments, Figure 1 and Fig. 9As shown, the box assembly 100 includes a box 1, and the box 1 includes a bottom plate 11, a top plate 12 and a frame 13 that enclose a receiving cavity 10. The frame 13 is annular, and the frame 13 is connected between the top plate 12 and the bottom plate 11, and the top plate 12 can be located on the upper side of the bottom plate 11. It can be seen that the frame 13 can be constructed as the skeleton of the box 1, which is conducive to improving the structural strength and bearing capacity of the box 1; usually, the bending resistance of the frame 13 is better than that of the top plate 12 and the bottom plate 11. "Annular" is understood in a broad sense, including but not limited to circular rings and polygonal rings. Exemplarily, the frame 13 includes a plurality of side beams connected in sequence, such as the frame 13 is a square ring structure, and the side beams are four and are respectively the first side beam, the second side beam, the third side beam and the fourth side beam, the first side beam and the third side beam are arranged opposite to each other on the left and right, and the second side beam and the fourth side beam are arranged opposite to each other on the front and back; optionally, the side beam is a profile.

[0073] Among them, the vehicle body mounting portion 100a is formed on the frame 13, which is conducive to improving the connection reliability between the box assembly 100 and the vehicle body 201, so as to adapt to the heavier battery pack 200. And / or, at least one of the suspension arm mounting portion 100b and the shock absorber mounting portion 100f is formed on the box assembly 100, and at least one of the suspension arm mounting portion 100b and the shock absorber mounting portion 100f is formed on the frame 13, which is conducive to improving the structural strength and bearing capacity of the suspension arm mounting portion 100b and the shock absorber mounting portion 100f, and improving the connection reliability between the box assembly 100 and the corresponding components. And / or, at least one of the steering gear mounting part 100c and the stabilizer bar mounting part 100d is formed on the box assembly 100, and the box assembly 100 also includes a bracket 2, which is accommodated in the accommodating cavity 10, and the bracket 2 is connected to the box 1, and at least one of the steering gear mounting part 100c and the stabilizer bar mounting part 100d is formed on the bracket 2, and the bracket 2 can improve the structural strength and stability of the box assembly 100, thereby facilitating the improvement of the structural strength and bearing capacity of the steering gear mounting part 100c and the stabilizer bar mounting part 100d, and improving the connection reliability of the box assembly 100 and the corresponding components. At this time, a avoidance structure can be formed on the box 1, and the avoidance structure is used to avoid the connection between the above at least one of the steering gear mounting part 100c and the stabilizer bar mounting part 100d and the corresponding components, and of course the box 1 can also be connected to the above corresponding components.

[0074] It can be seen that in the above scheme, the suspension arm mounting part 100b, the shock absorber mounting part 100f, the steering gear mounting part 100c, and the stabilizer bar mounting part 100d are not directly formed on the top plate 12 and the bottom plate 11 so that the top plate 12 and the bottom plate 11 directly bear the load, but are formed on the frame 13 and the bracket 2 with strong bearing capacity, which is beneficial to improve the installation reliability of the corresponding components.

[0075] For example, taking the frame 13 including the first side beam to the fourth side beam as an example, the first side beam and the third side beam are arranged oppositely to each other in the left and right directions, the second side beam and the fourth side beam are arranged oppositely to each other in the front and back directions, and each of the first side beam and the second side beam is formed with a suspension arm mounting portion 100b and a shock absorber mounting portion 100f. Among them, each of the first side beam to the fourth side beam can extend along a straight line or a curve. Taking the first side beam as an example, the first side beam extends along a curve, and the first side beam can include a plurality of straight beam sections connected in sequence and in different lines, but is not limited thereto.

[0076] In some embodiments, Figure 1 , Figure 3-Figure 5 and Fig. 9 As shown, the frame 13 includes a plurality of side beams connected end to end in sequence, and the connection position of two adjacent side beams forms a corner portion 131a. There are multiple body mounting portions 100a, and the multiple body mounting portions 100a include multiple first mounting portions 100h and / or multiple second mounting portions 100i. Among them, each corner portion 131a has a first mounting portion 100h, so as to achieve a reliable connection between the entire box assembly 100 and the vehicle body 201; and multiple second mounting portions 100i are formed on the two side beams arranged opposite to each other, which can also achieve a reliable connection between the entire box assembly 100 and the vehicle body 201.

[0077] Optionally, all vehicle body mounting portions 100a on the box assembly 100 may be respectively formed as first mounting portions 100h, or all vehicle body mounting portions 100a may be respectively formed as second mounting portions 100i, or a portion of all vehicle body mounting portions 100a may be formed as first mounting portions 100h and the rest may be formed as second mounting portions 100i; that is, the number of first mounting portions 100h is less than or equal to the total number of vehicle body mounting portions 100a, and the number of second mounting portions 100i is less than or equal to the number of vehicle body mounting portions 100a.

[0078] In some embodiments, Figure 1 As shown, the multiple vehicle body mounting parts 100a also include a third mounting part 100j, which is located on the upper side of the top plate 12, and the third mounting part 100j is protruded from the upper side of the top plate 12, so that the connection position of the third mounting part 100j and the vehicle body 201 is higher than the first mounting part 100h and the second mounting part 100i, so that the box assembly 100 can better adapt to the structure of the vehicle body 201 and improve the installation reliability of the box assembly 100.

[0079] In the embodiment of the present application, there is no specific restriction on the connection method between the first mounting part 100h and the vehicle body 201, the connection method between the second mounting part 100i and the vehicle body 201, and the connection method between the third mounting part 100j and the vehicle body 201. Any one of the first mounting part 100h, the second mounting part 100i and the third mounting part 100j can be rigidly connected to the vehicle body 201 or elastically connected. For example, the mounting part (any one of the first mounting part 100h, the second mounting part 100i and the third mounting part 100j) is welded and fixed to the vehicle body 201, or the mounting part is fixed to the vehicle body 201 by threaded fasteners (such as bolts, etc.), or the mounting part is connected to the vehicle body 201 by a bushing. It can be understood that the connection methods of the first mounting part 100h, the second mounting part 100i and the third mounting part 100j to the vehicle body 201 can be the same or different, for example, all three are fixed to the vehicle body 201, or all three are fixed to the vehicle body 201 by bolts, or all three are connected to the vehicle body 201 by bushings, but it is not limited to this.

[0080] exist Figure 1 In the example, the first mounting portion 100h is elastically connected to the vehicle body 201 through a bushing, the second mounting portion 100i is rigidly connected to the vehicle body 201 through a bolt, and the third mounting portion 100j is elastically connected to the vehicle body 201 through a bushing. At this time, the first mounting portion 100h can be configured as a mounting hole for installing the bushing, the second mounting portion 100i can be configured as a mounting hole for installing the bolt, and the third mounting portion 100j can be formed with a mounting hole for installing the bushing.

[0081] In some embodiments, Fig. 9 As shown, the box assembly 100 includes a bracket 2, and the bracket 2 includes at least one of a crossbeam 21, a longitudinal beam 22, and a support column. The crossbeam 21 extends in the left-right direction, and the two ends of the length of the crossbeam 21 are respectively connected to the frame 13, the longitudinal beam 22 extends in the front-back direction, and the two ends of the length of the longitudinal beam 22 are respectively connected to the frame 13, and the support column extends vertically, and the two ends of the support column are respectively connected to the bottom plate 11 and the top plate 12. It can be seen that the setting of the bracket 2 will not take up too much space, and can also be matched with the arrangement of the battery assembly, so that the corresponding components can be reliably installed by using the bracket 2 without adding components.

[0082] It is understandable that when the required setting position of at least one of the steering gear mounting part 100c and the stabilizer bar mounting part 100d corresponds to the cross beam 21 and / or the longitudinal beam 22, the steering gear mounting part 100c and the stabilizer bar mounting part 100d can be directly molded on the cross beam 21 and / or the longitudinal beam 22; when the required setting position of at least one of the steering gear mounting part 100c and the stabilizer bar mounting part 100d does not correspond to the cross beam 21 and / or the longitudinal beam 22, a support column can be added at the position, and the steering gear mounting part 100c and the stabilizer bar mounting part 100d can be molded on the support column. Therefore, whether the required setting position of at least one of the steering gear mounting part 100c and the stabilizer bar mounting part 100d matches the setting position of the cross beam 21 and the longitudinal beam 22 exactly, it is convenient to realize the reliable installation of the corresponding components.

[0083] Taking the frame 13 including the first to fourth side beams as an example: the bracket 2 includes a cross beam 21, which can divide the accommodating cavity 10 into a plurality of chambers spaced apart along the front-to-back direction, and the two ends of the length of the cross beam 21 are respectively connected to the first side beam and the third side beam; the bracket 2 includes a longitudinal beam 22, which can divide the accommodating cavity 10 into a plurality of chambers spaced apart along the left-to-right direction, and the two ends of the length of the longitudinal beam 22 are respectively connected to the second side beam and the fourth side beam; Fig. 9 As shown, the bracket 2 includes a cross beam 21 and a longitudinal beam 22, which intersect and divide the accommodating cavity 10 into a plurality of chambers spaced apart along the front-to-back direction and the left-to-right direction. The two ends of the length of the cross beam 21 are respectively connected to the first side beam and the third side beam, and the two ends of the length of the longitudinal beam 22 are respectively connected to the second side beam and the fourth side beam.

[0084] In some embodiments, Figure 5-Figure 7 As shown, at least one of the steering gear mounting portion 100c and the stabilizer bar mounting portion 100d is formed on the box assembly 100, and at least one of the steering gear mounting portion 100c and the stabilizer bar mounting portion 100d is formed as a second mounting hole 100l. As a result, the structures of the steering gear mounting portion 100c and the stabilizer bar mounting portion 100d are relatively simple and easy to process. Exemplarily, the second mounting hole 100l can be used to penetrate threaded fasteners (such as bolts, etc.) to connect the corresponding steering gear 203 or the stabilizer bar 204 to the box assembly 100. For example, the box assembly 100 includes a box body 1 and a bracket 2, a housing cavity 10 is formed in the box body 1, the bracket 2 is arranged in the housing cavity 10 and connected to the box body 1, and a steering gear mounting portion 100c and a stabilizer bar mounting portion 100d are formed on the top side of the bracket 2, and the steering gear mounting portion 100c and the stabilizer bar mounting portion 100d are both formed as second mounting holes 100l.

[0085] In some embodiments, Figure 3-Figure 5 , Figure 10-Figure 17As shown, the suspension control arm 202 includes at least one of a suspension upper swing arm 2021, a suspension lower swing arm 2022, and a suspension longitudinal arm 2023. That is, the suspension arm mounting portion 100b on the box assembly 100 is used to mount at least one of the suspension upper swing arm 2021, the suspension lower swing arm 2022, and the suspension longitudinal arm 2023. No matter how many suspension arm mounting portions 100b there are, a single suspension arm mounting portion 100b is used to mount one suspension control arm 202, and can be used to mount the suspension upper swing arm 2021, the suspension lower swing arm 2022, or the suspension longitudinal arm 2023. All suspension arm mounting portions 100b can be used to mount the suspension upper swing arm 2021, or all suspension arm mounting portions 100b can be used to mount the suspension lower swing arm 2022, or all suspension arm mounting portions 100b can be used to mount the suspension longitudinal arm 2023. Wherein, when there are multiple suspension arm mounting parts 100b, for the case where the suspension arm mounting parts 100b on the box assembly 100 are used to mount the suspension upper swing arm 2021 and the suspension lower swing arm 2022, at least one suspension arm mounting part 100b is used to mount the suspension upper swing arm 2021, and the remaining suspension arm mounting parts 100b can be used to mount the suspension lower swing arm 2022. For the case where the suspension arm mounting parts 100b on the box assembly 100 are used to mount the suspension upper swing arm 2021, the suspension lower swing arm 2022 and the suspension longitudinal arm 2023, at least one suspension arm mounting part 100b is used to mount the suspension upper swing arm 2021, at least one of the remaining suspension arm mounting parts 100b can be used to mount the suspension lower swing arm 2022, and the remaining suspension arm mounting parts 100b are used to mount the suspension longitudinal arm 2023, but are not limited thereto.

[0086] In the embodiment of the present application, there is no specific restriction on the structural forms of the suspension upper swing arm 2021, the suspension lower swing arm 2022, and the suspension longitudinal arm 2023. The suspension longitudinal arm 2023 is usually used for the non-steering rear wheel 208. If the box assembly 100 has a suspension arm mounting portion 100b for mounting the suspension longitudinal arm 2023, the suspension arm mounting portion 100b can be formed on the second portion R2 located at the rear side of the first portion R1.

[0087] like Figure 3-Figure 5 , Figure 10-Figure 17As shown, the box assembly 100 includes a first part R1 and a second part R2, and the second part R2 is provided on at least one side of the first part R1 in the front-to-back direction. The lower surface of the first part R1 and the lower surface of the second part R2 are arranged flush, which is convenient for simplifying the lower surface of the box assembly 100. When the box assembly 100 is used in the vehicle 300, it is convenient to set the spacing between the box assembly 100 and the ground; a plurality of suspension arm mounting portions 100b include a fourth mounting portion 100m and / or a fifth mounting portion 100n, the fourth mounting portion 100m is used to install the suspension upper swing arm 2021 or the suspension lower swing arm 2022, and the fifth mounting portion 100n is used to install the suspension longitudinal arm 2023. In the left-right direction, the width W2 of the second part R2 is smaller than the width W1 of the first part R1, and at least one of the steering gear mounting portion 100c, the stabilizer bar mounting portion 100d, the drive unit mounting portion and the shock absorber mounting portion 100f is formed on the second part R2.

[0088] Under the above premise, in the up and down direction, the height H2 of the second part R2 is greater than or equal to the height H1 of the first part R1, and the fourth mounting portion 100m is formed on the second part R2; and / or, the fifth mounting portion 100n is formed on the side wall of the second part R2 adjacent to the rear side of the first part R1, that is, the second part R2 is provided on the rear side of the first part R1, and the fifth mounting portion 100n is formed on the portion of the rear side wall of the first part R1 that exceeds the second part R2 in the left and right direction.

[0089] It can be seen that the second part R2 can provide a setting position for at least one of the fourth mounting part 100m, the steering gear mounting part 100c, the stabilizer bar mounting part 100d, the drive unit mounting part and the shock absorber mounting part 100f, and the first part R1 can provide a setting position for the fifth mounting part 100n. At the same time, since at least one of the suspension arm mounting part 100b, the steering gear mounting part 100c, the stabilizer bar mounting part 100d, the drive unit mounting part and the shock absorber mounting part 100f is arranged relatively forward or backward, usually arranged near the wheel, by setting the width of the second part R2 to be smaller than the width of the first part R1, the second part R2 is not easy to interfere with the wheel and other surrounding parts, so that the setting position of at least one of the suspension control arm 202, the steering gear 203, the stabilizer bar 204, the drive assembly 205 and the shock absorber 206 does not need to be adjusted or slightly adjusted, and additional avoidance design is saved or not required, which is convenient for simplifying the structure. At the same time, the first part R1 is relatively large in size in the left and right directions and can accommodate battery cells with larger capacity.

[0090] In the above solution, when the box assembly 100 is used in the vehicle 300, the second portion R2 is arranged on the side of the first portion R1 facing the suspension and protrudes from the first portion R1. Optionally, the size (front-to-back direction, left-to-right direction) of the second portion R2 can be consistent with the size of at least part of the structure of the subframe it replaces.

[0091] It is understandable that the structures of the plurality of suspension arm mounting portions 100b may be the same or different. When the box assembly 100 includes the box 1, the first portion R1 may include a portion of the box 1, and the second portion R2 also includes a portion of the box 1, and the width of the box 1 corresponding to the first portion R1 is greater than the width of the box 1 corresponding to the second portion R2, for example, the suspension arm mounting portion 100b and the shock absorber mounting portion 100f are formed on the portion of the frame 13 corresponding to the second portion R2; when the box assembly 100 includes the box 1 and the bracket 2, the first portion R1 includes a portion of the box 1, and the second portion R2 includes a portion of the box 1 and the bracket 2, and the first portion R1 may include the bracket 2 or may not include the bracket 2, for example, the steering gear mounting portion 100c and the stabilizer bar mounting portion 100d are formed on the portion of the bracket 2 corresponding to the second portion R2.

[0092] Take the box assembly 100 having a suspension arm mounting portion 100b, a steering gear mounting portion 100c, a stabilizer bar mounting portion 100d, a drive mounting portion 100e and a shock absorber mounting portion 100f as an example: when the front side of the first portion R1 is provided with the second portion R2, but the rear side is not provided with the second portion R2, the suspension arm mounting portion 100b on the second portion R2 can be used to install the front suspension control arm 202, the steering gear mounting portion 100c on the second portion R2 can be used to install the steering gear 203 corresponding to the front wheel 207, the stabilizer bar mounting portion 100d on the second portion R2 can be used to install the stabilizer bar 204 corresponding to the front wheel 207, the drive assembly 205 installed on the second portion R2 can be installed in the front, and the shock absorber on the second portion R2 can be installed in the front. The shock absorber mounting portion 100f can be installed with a shock absorber 206 corresponding to the front wheel 207; when the second portion R2 is provided on the rear side of the first portion R1 but not on the front side, the suspension arm mounting portion 100b on the second portion R2 can be used to install the rear suspension control arm 202, the steering gear mounting portion 100c on the second portion R2 can be installed with a steering gear 203 corresponding to the rear wheel 208 (for the case where the rear wheel 208 has no steering function, the steering gear mounting portion 100c may not be required on the second portion R2), the stabilizer bar mounting portion 100d on the second portion R2 can be installed with a stabilizer bar 204 corresponding to the rear wheel 208, the drive assembly 205 installed on the second portion R2 can be rear-mounted, and the second portion The shock absorber mounting portion 100f on R2 can be mounted with the shock absorber 206 corresponding to the rear wheel 208; when the second portions R2 are respectively provided on the front and rear sides of the first portion R1, at least one of the two second portions R2 has a suspension arm mounting portion 100b, a steering gear mounting portion 100c, a stabilizer bar mounting portion 100d, a drive mounting portion 100e and a shock absorber mounting portion 100f, or one of the second portions R2 has at least one of the suspension arm mounting portion 100b, the steering gear mounting portion 100c, the stabilizer bar mounting portion 100d, the drive mounting portion 100e and the shock absorber mounting portion 100f, and the other second portion R2 has a suspension arm mounting portion 100b, a steering gear mounting portion 100c, a stabilizer bar mounting portion 100d, a drive mounting portion 100e and a shock absorber mounting portion 100f. d. The remaining ones of the drive mounting part 100e and the shock absorber mounting part 100f, such as the front second part R2 is used to install the front suspension control arm 202, the steering gear 203 corresponding to the front wheel 207, the stabilizer bar 204 corresponding to the front wheel 207, and the shock absorber 206 corresponding to the front wheel 207; the rear second part R2 is used to install the rear suspension control arm 202, the steering gear 203 corresponding to the rear wheel 208 (for the case where the rear wheel 208 has no steering function, the steering gear mounting part 100c may not be required on the rear second part R2), the stabilizer bar 204 corresponding to the rear wheel 208, and the shock absorber 206 corresponding to the rear wheel 208; the drive mounting part 100e can be formed on any one of the two second parts R2.

[0093] It can be understood that the number of fourth mounting parts 100m can be one or more, and a single fourth mounting part 100m is used to install the suspension upper arm 2021 or the suspension lower arm 2022. The number of fifth mounting parts 100n can be one or more, and a single fifth mounting part 100n is used to install the suspension longitudinal arm 2023.

[0094] In some embodiments, Figure 1-Figure 8 As shown, the upper surface of at least one second portion R2 is flush with the upper surface of the first portion R1, and the fourth mounting portion 100m on the at least one second portion R2 is used to mount the suspension lower arm 2022; and / or, as Fig.10 and Fig.11 As shown, at least a portion of the upper surface of at least one second portion R2 is higher than the upper surface of the first portion R1, the fourth mounting portion 100m at the upper portion of the at least one second portion R2 is used to mount the upper swing arm 2021 of the suspension, and the fourth mounting portion 100m at the lower portion of the at least one second portion R2 is used to mount the lower swing arm 2022 of the suspension; and / or, at least a portion of the upper surface of at least one second portion R2 is higher than the upper surface of the first portion R1, and the shock absorber mounting portion 100f is located at the upper portion of the second portion R2. It can be seen that the box assembly 100 is configured to meet at least one of the above three conditions. As a result, the box assembly 100 is flexible in configuration and has good applicability.

[0095] It can be understood that, in the vehicle 300, the upper suspension arm 2021 is spaced above the lower suspension arm 2022 and the suspension longitudinal arm 2023, and the positions of the lower suspension arm 2022 and the suspension longitudinal arm 2023 in the vertical direction are substantially equivalent. When the second portion R2 is flush with the first portion R1 in the vertical direction, the position of the second portion R2 in the vertical direction can be substantially equivalent to the position of the lower suspension arm 2022, and the position of the first portion R1 in the vertical direction can be substantially equivalent to the position of the suspension longitudinal arm 2023, so that the fourth mounting portion 100m on the second portion R2 can be used to mount the lower suspension arm 2022, and the fifth mounting portion 100n on the first portion R1 can be used to mount the suspension longitudinal arm 2023; and when at least a portion of the upper surface of the second portion R2 is higher than the upper surface of the first portion R1, the second portion R2 is substantially equivalent to the lower suspension arm 2022. 2 has a relatively large thickness in the vertical direction, which is conducive to further increasing the accommodating space of the accommodating cavity 10 and increasing the capacity of the battery pack 200. The position of the lower portion of the second portion R2 in the vertical direction can be equivalent to the position of the lower suspension arm 2022, and the position of the upper portion of the second portion R2 in the vertical direction can be equivalent to the position of the upper suspension arm 2021, so that the fourth mounting portion 100m of the upper portion of the second portion R2 can be used to mount the upper suspension arm 2021, and the fourth mounting portion 100m of the lower portion of the second portion R2 can be mounted on the lower suspension arm 2022; similarly, when at least part of the upper surface of the second portion R2 is higher than the upper surface of the first portion R1, the position of the upper portion of the second portion R2 in the vertical direction can be equivalent to the position of the upper portion of the shock absorber 206, so that the shock absorber mounting portion 100f can be mounted on the upper portion of the second portion R2.

[0096] For the case where the upper surface of the first part R1 and the upper surface of the second part R2 are arranged flush, the following examples may be included: 1. The second part R2 is provided on the front side of the first part R1, but not on the rear side, and the fourth mounting portion 100m on the second part R2 is used to install the suspension lower arm 2022; 2. When the second part R2 is provided on the rear side of the first part R1, but not on the front side, the fourth mounting portion 100m on the second part R2 is used to install the suspension lower arm 2022; 3. When the second parts R2 are provided on the front and rear sides of the first part R1 respectively, the fourth mounting portion 100m on at least one of the two second parts R2 is used to install the suspension lower arm 2022.

[0097] In the case where at least part of the upper surface of the second portion R2 is higher than the upper surface of the first portion R1, at this time, at least part of the upper surface of the second portion R2 is protruding relative to the upper surface of the first portion R1, and the following examples may be included: 1. The second portion R2 is provided on the front side of the first portion R1, and the second portion R2 is not provided on the rear side, the fourth mounting portion 100m on the upper portion of the second portion R2 is used to mount the upper suspension arm 2021, and the fourth mounting portion 100m on the lower portion of the second portion R2 is used to mount the lower suspension arm 2022; 2. The first portion R1 When the second part R2 is provided on the rear side but not on the front side, the fourth mounting portion 100m on the upper part of the second part R2 is used to mount the upper suspension arm 2021, and the fourth mounting portion 100m on the lower part of the second part R2 is used to mount the lower suspension arm 2022; 3. When the second parts R2 are provided on the front and rear sides of the first part R1 respectively, the fourth mounting portion 100m on the upper part of at least one of the two second parts R2 is used to mount the upper suspension arm 2021, and the fourth mounting portion 100m on the lower part is used to mount the lower suspension arm 2022.

[0098] For the case where at least part of the upper surface of the second part R2 is higher than the upper surface of the first part R1, the following examples may also be included: 1. The second part R2 is provided on the front side of the first part R1, but not on the rear side, and the shock absorber mounting portion 100f on the upper part of the second part R2 is used to install the shock absorber 206; 2. When the second part R2 is provided on the rear side of the first part R1, but not on the front side, the shock absorber mounting portion 100f on the upper part of the second part R2 is used to install the shock absorber 206; 3. When the second parts R2 are provided on the front and rear sides of the first part R1 respectively, the shock absorber mounting portion 100f on the upper part of at least one of the two second parts R2 is used to install the shock absorber 206.

[0099] For the case where the second parts R2 are respectively provided on the front and rear sides of the first part R1, the upper surface of the first part R1 is flush with the upper surface of one of the second parts R2, and at least part of the upper surface of the other second part R2 is higher than the upper surface of the first part R1, the case where the front second part R2 is flush with the first part R1 and at least part of the upper surface of the rear second part R2 is higher than the upper surface of the first part R1 is taken as an example: the fourth mounting portion 100m on the front second part R2 is used to mount the suspension lower arm 2022, the fourth mounting portion 100m on the upper part of the rear second part R2 is used to mount the suspension upper arm 2021, and the fourth mounting portion 100m on the lower part of the rear second part R2 is used to mount the suspension lower arm 2022; but it is not limited thereto. Of course, the rear second part R2 can also be flush with the first part R1 and at least part of the upper surface of the front second part R2 is higher than the upper surface of the first part R1.

[0100] For example, for a single suspension arm mounting portion 100b, the suspension arm mounting portion 100b is located on the left or right side of the box assembly 100, for example, Figure 1 , Figure 8 and Fig.11 In the example, the left and right sides of the second part R2 respectively have suspension arm mounting parts 100b, which is convenient for achieving consistent arrangement of the suspension control arm 202; when at least part of the upper surface of the second part R2 is higher than the upper surface of the first part R1, and the left and right sides of the second part R2 respectively have suspension arm mounting parts 100b at the upper and lower parts, the second part R2 may include a main body R21 and a protruding part R22, the main body is flush with the first part R1 above and below, the protruding part R22 is formed by protruding upward from part of the upper surface of the main body R21 so that the protruding part R22 is configured to include two convex beams R221 spaced apart from each other on the left and right sides, or, the protruding part R22 is formed by protruding upward from the entire upper surface of the main body R21, the suspension arm mounting parts 100b on the left and right sides of the main body R21 can be used to install the suspension lower swing arm 2022, and the suspension arm mounting parts 100b on the left and right sides of the protruding part R22 can be used to install the suspension upper swing arm 2021. It is understandable that a battery cell or a control circuit etc. may be disposed in the convex beam R221. Fig.10 In the example shown in FIG. 5 , the protruding portion R22 is formed by the entire upper surface of the main body portion R21 protruding upward.

[0101] For example, whether the protrusion R22 is formed by partially or entirely protruding from the upper surface of the main body R21, the upper portion of the second portion R2 may have a suspension arm mounting portion 100b and a shock absorber mounting portion 100f. Figure 18-Figure 21 The upper right side of the second part R2 has two suspension arm mounting parts 100b arranged at intervals, and the two suspension arm mounting parts 100b are respectively used to install the suspension upper swing arm 2021, and a shock absorber mounting part 100f is provided between the two suspension arm mounting parts 100b. The lower right side of the second part R2 has a fourth mounting part 100m for installing the suspension lower swing arm 2022. The shock absorber 206 is installed on the shock absorber mounting part 100f, and the lower end of the shock absorber 206 is connected to the suspension lower swing arm 2022. The two suspension upper swing arms 2021 installed on the upper right side of the second part R2 are arranged on the outer peripheral side of the shock absorber 206, and the structural layout is reasonable and compact.

[0102] Optionally, the shock absorber mounting portion 100f may be configured as a bracket, and the bracket may be integral with the corresponding portion of the box body 1 (e.g., the frame 13) (e.g., integrally cast or integrally forged), or the bracket may be welded or riveted to the box body 1, etc., to achieve the installation of the shock absorber 206 on the box body 1. Of course, in some other examples, the bracket configured as the shock absorber mounting portion 100f may be used as a transition bracket and fixed to the box body 1 by bolts or other fixing methods; that is, the bracket configured as the shock absorber mounting portion 100f may be integral with the corresponding portion of the box body 1 or a separate piece.

[0103] In some embodiments, the front and rear sides of the first part R1 are respectively provided with second parts R2, one of the second parts R2 has a drive mounting portion 100e, and the upper surface of one of the second parts R2 is flush with the upper surface of the first part R1, and at least part of the upper surface of the other second part R2 is higher than the upper surface of the first part R1, then the other second part R2 does not have a drive mounting portion 100e, so that the other second part R2 and the drive assembly 205 are staggered front and back, and the height of the vehicle 300 will not be excessively increased. At this time, the vehicle 300 can be selected as a two-wheel drive vehicle, and the drive assembly 205 can be realized as a front front drive, a front rear drive, a rear front drive or a rear rear drive according to the position of the drive mounting portion 100e. In other embodiments, the box assembly 100 does not have a drive mounting portion 100e, and the vehicle 300 can optionally use a hub motor as a drive source.

[0104] In some embodiments, Figure 1 and Fig. 9 As shown, the box assembly 100 includes a box 1 that encloses a receiving cavity 10 , for example, the box 1 includes a top plate 12 , a bottom plate 11 and a frame 13 , and the frame 13 is annular and connects the bottom plate 11 and the top plate 12 .

[0105] Among them, Figure 2 , Fig.13 , Figure 15-17 As shown, at least one suspension arm mounting portion 100b is a mounting groove 100o formed on the outer surface of the box body 1 (for example, the mounting groove 100o is formed on the outer peripheral wall of the frame 13), and a third mounting hole 100p is formed on the groove wall of the mounting groove 100o, or a fourth mounting hole 100q is formed on the peripheral side of the corresponding mounting groove 100o on the outer surface of the box body 1, and the corresponding suspension control arm 202 can be connected to the third mounting hole 100p or the fourth mounting hole 100q, and a part of the suspension control arm 202 extends into the mounting groove 100o, or a transition bracket 100s that realizes an indirect connection between the suspension control arm 202 and the suspension arm mounting portion 100b extends into the mounting groove 100o (for example, the transition bracket 100s and the suspension control arm 202 can be fixedly connected by bolts); and / or, as Fig.10 , Fig.11 and Fig.13 As shown, at least one suspension arm mounting portion 100b is a mounting bracket 100r protruding from the outer surface of the box body 1 (for example, the mounting bracket 100r protrudes from the outer peripheral wall of the frame 13), and an escape space is defined between the mounting bracket 100r and the outer surface of the box body 1, and the corresponding suspension control arm 202 is mounted on the mounting bracket 100r, and part of the suspension control arm 202 extends into the escape space, or the transition bracket 100s that realizes the indirect connection between the suspension control arm 202 and the suspension arm mounting portion 100b extends into the escape space, so that the escape space can escape the suspension control arm 202. It can be seen that the structural form of the suspension arm mounting portion 100b is flexibly designed, and it is convenient to provide escape for the movement of the corresponding suspension control arm 202, and it is convenient for the suspension mounting portion to be reliably connected with the suspension control arm 202.

[0106] It can be understood that the structure of the suspension arm mounting portion 100b is applicable to the mounting of any one of the suspension upper swing arm 2021, the suspension lower swing arm 2022 and the suspension trailing arm 2023. Figure 10-Figure 14 In the example, the fourth mounting portion 100m for mounting the lower suspension arm 2022 is formed as a mounting groove 100o, the fourth mounting portion 100m for mounting the upper suspension arm 2021 is formed as a mounting bracket 100r, one of the fifth mounting portions 100n is formed as a mounting groove 100o, and another fifth mounting portion 100n is formed as a mounting bracket 100r. Figure 15-17 In the example, each fifth mounting portion 100n is formed as a mounting groove 100o.

[0107] In addition, the embodiment of the present application does not impose any specific restrictions on the connection method between the mounting bracket 100r and the box body 1. For example, the mounting bracket 100r and the corresponding part of the box body 1 (such as the frame 13) are an integral part (such as integral casting or integral forging), and the mounting bracket 100r and the box body 1 are welded or riveted, etc.

[0108] Alternatively, if Fig.13 As shown, the suspension arm mounting portion 100b is a mounting groove 100o formed on the outer surface of the box body 1, and a fourth mounting hole 100q is formed on the outer surface of the box body 1 at the peripheral side corresponding to the mounting groove 100o. A bushing 210 is installed at one end of the suspension control arm 202 (any one of the suspension upper swing arm 2021, the suspension lower swing arm 2022 and the suspension trailing arm 2023), and a control arm mounting frame 211 is installed in the bushing 210. The control arm mounting frame 211 is installed in the fourth mounting hole 100q by bolts, and the mounting groove 100o is used to avoid the swinging area of ​​the suspension control arm 202 to prevent the suspension control arm 202 from interfering with the box assembly 100 during movement; Fig.16 and Fig.17 The installation method of the middle suspension control arm 202 is the same as Fig.13 The same, the installation location is different, no further description is given here. Fig.14 As shown, the suspension arm mounting portion 100b is a mounting bracket 100r protruding from the outer surface of the box body 1, and a bushing 210 is installed at one end of the suspension control arm 202, and the bushing 210 is installed on the mounting bracket 100r by bolts.

[0109] In some embodiments, at least one suspension arm mounting portion 100b is formed as a mounting groove 100o, and a third mounting hole 100p is formed on the groove wall of the mounting groove 100o. Figure 2 and Figure 3 As shown, the upper and lower groove walls of the mounting groove 100o are respectively formed with third mounting holes 100p, and the upper and lower third mounting holes 100p are both suitable for being directly or indirectly connected to the corresponding suspension control arm 202; or, as shown in FIG. Fig.16 and Fig.17 As shown, the mounting groove 100o penetrates the lower surface of the box 1, and the upper groove wall or the lower groove wall of the mounting groove 100o is formed with a third mounting hole 100p. For example, the mounting groove 100o penetrates the lower surface of the box 1, and the upper groove wall of the mounting groove 100o is formed with a third mounting hole 100p, or the mounting groove 100o penetrates the lower surface of the box 1, and the lower groove wall of the mounting groove 100o is formed with a third mounting hole 100p. At this time, a part of the lower side of the mounting groove 100o penetrates to the lower surface of the box 1, and the third mounting hole 100p is formed on another part of the lower groove wall of the mounting groove 100o. As a result, the installation method of the suspension control arm 202 is flexible, and can be adapted to the setting according to actual needs, thereby improving the practicality of the box assembly 100.

[0110] Optionally, when the installation groove 100o passes through the lower surface of the box body 1, regardless of whether the third installation hole 100p is formed on the upper groove wall or the lower groove wall of the installation groove 100o, the installation groove 100o can pass through the upper surface of the box body 1, or the installation groove 100o does not pass through the upper surface of the box body 1.

[0111] It can also be understood that the structural form of the above-mentioned installation groove 100o is applicable to the installation of any one of the suspension upper swing arm 2021, the suspension lower swing arm 2022 and the suspension trailing arm 2023. Figure 1-Figure 3 , Figure 15-17In the example, the fourth mounting portion 100m for mounting the suspension lower arm 2022 is formed as a mounting groove 100o, and the upper and lower side groove walls of the mounting groove 100o are respectively formed with third mounting holes 100p, and the transition bracket 100s extends into the mounting groove 100o and is connected to the box assembly 100 by bolts, wherein one of the fifth mounting portions 100n is formed as a mounting groove 100o which penetrates the box 1 at the lower side and has the third mounting hole 100p formed on the upper side groove wall, and the other fifth mounting portion 100n is formed as a mounting groove 100o which penetrates the box 1 at the upper and lower sides and has the third mounting hole 100p formed on the lower side groove wall, so as to facilitate the installation of the suspension control arm 202.

[0112] The battery pack 200 according to the second embodiment of the present invention comprises a battery assembly and a box assembly 100 according to the first embodiment of the present invention. The battery assembly comprises a plurality of battery cells, and the battery assembly is disposed in a receiving cavity 10 .

[0113] The battery pack 200 according to the embodiment of the present invention is advantageously improved in terms of integration and capacity of the battery pack 200 by using the above-mentioned box assembly 100. In the embodiment of the present application, no specific limitation is imposed on the shape of the battery cell and the arrangement of the plurality of battery cells.

[0114] It can be understood that the battery pack 200 described in the embodiment of the present application can be applicable to various devices using the battery pack 200, such as electric toys, electric tools, vehicles 300, ships and spacecraft, etc.

[0115] The vehicle 300 according to the third aspect of the present invention includes the battery pack 200 according to the second aspect of the present invention, and the battery pack 200 is used to provide electrical energy. The vehicle 300 according to the embodiment of the present invention, by adopting the above-mentioned battery pack 200, is conducive to improving the endurance and reliability of the vehicle 300. For example, the vehicle 300 can be a battery vehicle, a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle. The vehicle 300 is provided with a battery pack 200, and the battery pack 200 can be arranged at the bottom, head or tail of the vehicle 300. The battery pack 200 can be used for powering the vehicle 300. For example, the battery pack 200 can be used as an operating power supply for the vehicle 300, such as the battery pack 200 for the starting, navigation and driving of the vehicle 300. In some embodiments of the present application, the battery pack 200 can not only be used as the operating power supply of the vehicle 300, but also as the driving power supply of the vehicle 300, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 300.

[0116] In some embodiments, Fig. 22As shown, the box assembly 100 includes a first part R1 and a second part R2, the first part R1 is provided with a second part R2 on at least one side in the front-to-back direction, at least one of the suspension arm mounting part 100b, the steering gear mounting part 100c, the stabilizer bar mounting part 100d, the drive mounting part 100e and the shock absorber mounting part 100f is formed on the second part R2, and in the left-right direction, the width of the second part R2 is less than or equal to the width of the first part R1; the vehicle 300 includes two front wheels 207 spaced apart from each other and two rear wheels 208 spaced apart from each other, and the width of the second part R2 located in front of the first part R1 can be less than the left-right spacing X1 between the two front wheels 207, and / or the width of the second part R2 located behind the first part R1 is less than the left-right spacing X2 between the two rear wheels 208. As a result, it is easy to achieve the avoidance of the battery pack 200 and the wheels, and the installation convenience is improved.

[0117] It is understandable that when the second parts R2 are respectively provided on the front and rear sides of the first part R1, the corresponding sizes of the two second parts R2 may be equal or unequal. Other configurations and operations of the vehicle 300 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0118] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0119] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0120] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0121] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A box assembly, characterized in that: The box assembly is used for a battery pack, and has a receiving cavity for accommodating a battery assembly of the battery pack. The box assembly has a vehicle body mounting portion, and the vehicle body mounting portion is suitable for being connected to the vehicle body. The box assembly also has at least one of a suspension arm mounting portion, a steering gear mounting portion, a stabilizer bar mounting portion, a drive mounting portion, and a shock absorber mounting portion. At least one of a suspension arm mounting portion and a shock absorber mounting portion is formed on the box assembly, and at least one of the suspension arm mounting portion and the shock absorber mounting portion is located on the left side or the right side of the box assembly; and, The box assembly is formed with at least one of a steering gear mounting portion, a drive mounting portion and a stabilizer bar mounting portion, and at least one of the steering gear mounting portion, the drive mounting portion and the stabilizer bar mounting portion is located on the upper side of the box assembly; The box assembly includes a box, the box includes a bottom plate, a top plate and a frame surrounding the accommodating cavity, the frame is annular and connected between the top plate and the bottom plate, and the box assembly is configured to meet at least one of the following conditions: The vehicle body mounting portion is formed on the frame; At least one of a suspension arm mounting portion and a shock absorber mounting portion is formed on the box assembly, and at least one of the suspension arm mounting portion and the shock absorber mounting portion is formed on the frame; At least one of a steering gear mounting portion and a stabilizer bar mounting portion is formed on the box assembly, and the box assembly also includes a bracket, which is accommodated in the accommodating cavity and connected to the box, and at least one of the steering gear mounting portion and the stabilizer bar mounting portion is formed on the bracket.

2. The box assembly according to claim 1, characterized in that: A drive mounting portion is formed on the box assembly, and an avoidance groove is formed on the upper surface of the box assembly.

3. The box assembly according to claim 1, characterized in that: The box assembly includes a box surrounding the accommodating cavity, the drive mounting portion is protrudingly arranged on the upper side of the box, a first mounting hole is formed on the drive mounting portion, and the first mounting hole is spaced apart above the box.

4. The box assembly according to claim 1, characterized in that: The frame includes a plurality of side beams connected end to end in sequence, the connection position of two adjacent side beams forms a corner portion, and the vehicle body mounting portion is multiple and includes: A plurality of first mounting portions, each of the corner portions having a first mounting portion; and / or, A plurality of second mounting portions are respectively formed on the two side beams that are arranged opposite to each other.

5. The box assembly according to claim 4, characterized in that: The plurality of vehicle body mounting portions further include a third mounting portion, and the third mounting portion is protruded from the upper side of the top plate.

6. The box assembly according to claim 1, characterized in that: The box assembly includes a bracket, which includes at least one of a crossbeam, a longitudinal beam and a support column. The crossbeam extends in the left-right direction and its two ends are respectively connected to the frame. The longitudinal beam extends in the front-back direction and its two ends are respectively connected to the frame. The support column extends vertically and its two ends are respectively connected to the bottom plate and the top plate.

7. The box assembly according to claim 1, characterized in that: At least one of a steering gear mounting portion and a stabilizer bar mounting portion is formed on the box assembly, and at least one of the steering gear mounting portion and the stabilizer bar mounting portion is formed as a second mounting hole.

8. The box assembly according to any one of claims 1 to 7, characterized in that: The box assembly includes a first part and a second part, the first part is provided with the second part on at least one side in the front-rear direction, the lower surface of the first part and the lower surface of the second part are arranged flush, the plurality of suspension arm mounting parts include a fourth mounting part and / or a fifth mounting part, the fourth mounting part is used to mount the upper swing arm of the suspension or the lower swing arm of the suspension, the fifth mounting part is used to mount the longitudinal arm of the suspension, in the left-right direction, the width of the second part is smaller than the width of the first part, at least one of the steering gear mounting part, the stabilizer bar mounting part, the drive mounting part and the shock absorber mounting part is formed on the second part, In the up-down direction, the height of the second portion is greater than or equal to the height of the first portion, and the fourth mounting portion is formed on the second portion; and / or, The fifth mounting portion is formed on a side wall of the first portion adjacent to the rear side of the second portion.

9. The box assembly according to claim 8, characterized in that: The upper surface of at least one of the second parts is flush with the upper surface of the first part, and the fourth mounting portion on at least one of the second parts is used for the suspension lower arm; and / or, At least a portion of the upper surface of at least one of the second parts is higher than the upper surface of the first part, the fourth mounting portion of the upper part of at least one of the second parts is used to mount the upper swing arm of the suspension, and the fourth mounting portion of the lower part of at least one of the second parts is used to mount the lower swing arm of the suspension; and / or, At least a portion of the upper surface of at least one of the second parts is higher than the upper surface of the first part, and the vibration absorber mounting portion is located on the upper part of the second part.

10. The box assembly according to claim 8, characterized in that: The second parts are respectively arranged on the front and rear sides of the first part, one of the second parts has a drive mounting portion and its upper surface is flush with the upper surface of the first part, and at least part of the upper surface of the other second part is higher than the upper surface of the first part.

11. The box assembly according to claim 8, characterized in that: The box assembly comprises a box body surrounding the accommodating cavity, At least one of the suspension arm mounting portions is a mounting groove formed on the outer surface of the box body, a third mounting hole is formed on the groove wall of the mounting groove, or a fourth mounting hole is formed on the outer surface of the box body corresponding to the peripheral side of the mounting groove; and / or, At least one of the suspension arm mounting parts is a mounting bracket protruding from the outer surface of the box body, and an escape space is defined between the mounting bracket and the outer surface of the box body.

12. The box assembly according to claim 11, characterized in that: At least one of the suspension arm mounting portions is formed as a mounting groove, and a third mounting hole is formed on a groove wall of the mounting groove. The third mounting holes are respectively formed on the upper and lower groove walls of the mounting groove; or, The installation groove passes through the lower surface of the box body, and the third installation hole is formed on the upper groove wall or the lower groove wall of the installation groove.

13. A battery pack, characterized in that: It comprises a battery assembly and a box assembly according to any one of claims 1 to 12, wherein the battery assembly comprises a plurality of battery cells and is arranged in the accommodating cavity.

14. A vehicle, characterized in that: Comprising the battery pack according to claim 13.

15. The vehicle according to claim 14, characterized in that The vehicle includes two front wheels spaced apart from each other and two rear wheels spaced apart from each other, the box assembly includes a first portion and a second portion, the first portion is provided with the second portion on at least one side in the front-rear direction, at least one of the suspension arm mounting portion, the steering gear mounting portion, the stabilizer bar mounting portion, the drive mounting portion and the shock absorber mounting portion is formed on the second portion, and in the left-right direction, the width of the second portion is less than or equal to the width of the first portion, The width of the second part located in front of the first part is smaller than the distance between the two front wheels; and / or, The width of the second portion located at the rear side of the first portion is smaller than the distance between the two rear wheels.

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