CN216980734U

CN216980734U - Battery package box, battery package and vehicle

Info

Publication number: CN216980734U
Application number: CN202122905888.1U
Authority: CN
Inventors: 祁鹏飞; 郭军; 徐超
Original assignee: Beijing CHJ Automobile Technology Co Ltd
Current assignee: Beijing CHJ Automobile Technology Co Ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-07-15
Anticipated expiration: 2031-11-24

Abstract

The utility model relates to a battery package box, battery package and vehicle, this battery package box includes crossbeam, longeron and connection structure; the connecting structure comprises a first connecting part and a second connecting part which are connected with each other, the first connecting part is connected with the longitudinal beam, and the second connecting part is connected with the cross beam. Based on this, crossbeam and longeron in the battery package box that this disclosure provided can link together through connection structure, have avoided among the prior art welding stress that welded connection exists and to the softening of crossbeam, longeron material, joint strength is high, stability is good, has also improved the bulk strength and the reliability of battery package box to a certain extent.

Description

Battery package box, battery package and vehicle

Technical Field

The utility model relates to an electric automobile technical field especially relates to a battery package box, battery package and vehicle.

Background

And a cross beam and a longitudinal beam are arranged in the battery pack box body. The battery pack box body has a bearing function, so the battery pack box body has higher requirement on strength.

In the prior art, in order to meet the strength requirement, the cross beam and the longitudinal beam in the battery pack box body are usually connected together in a welding mode, however, materials of the cross beam and the longitudinal beam can be softened by welding, and welding stress exists, so that the connection strength between the cross beam and the longitudinal beam is low, the stability is poor, and the overall strength and the reliability of the battery pack box body can be reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems or at least partially solve the technical problems, the present disclosure provides a battery pack case, a battery pack, and a vehicle.

In order to achieve the above object, in a first aspect, the present disclosure provides a battery pack case, including a cross beam, a longitudinal beam, and a connecting structure;

the connecting structure comprises a first connecting part and a second connecting part which are connected with each other, the first connecting part is connected with the longitudinal beam, and the second connecting part is connected with the cross beam.

Furthermore, a jack matched with the first connecting part is formed in the cross beam, and the first connecting part penetrates through the jack and is connected with the longitudinal beam so that the first connecting part and the longitudinal beam are relatively fixed; the second connecting portion abuts against one surface, deviating from the longitudinal beam, of the cross beam, and is connected with the cross beam so that the second connecting portion and the cross beam are relatively fixed.

Furthermore, a first assembling hole is formed in the first connecting part, and a first mounting hole matched with the first assembling hole is formed in the longitudinal beam;

the first connecting portion is connected with the longitudinal beam through a first fastening structure arranged in the first assembling hole and the first mounting hole in a penetrating mode.

Furthermore, the number of the first assembling holes is at least two, the at least two first assembling holes are arranged at intervals along the axial direction of the first connecting part, the number of the first mounting holes is at least two, and one first mounting hole corresponds to one first assembling hole; and/or at least two first assembling holes are respectively arranged on two sides of the cross beam.

Furthermore, the longitudinal beam is provided with a cavity matched with the first connecting part, and the first connecting part penetrates through the jack and extends into the cavity and is connected with the longitudinal beam.

Further, when the height of the top wall of the cavity is greater than the height of the top wall of the jack, the position of the first connecting portion corresponding to the cross beam is provided with an avoiding groove for avoiding the cross beam.

Further, the groove height of the avoidance groove is not less than the height difference between the cavity top wall and the jack top wall.

Furthermore, a second assembling hole is formed in the second connecting portion, and a second mounting hole matched with the second assembling hole is formed in the cross beam;

the second connecting portion is connected with the cross beam through a second fastening structure arranged in the second assembling hole and the second mounting hole in a penetrating mode.

Further, the second connecting portion include the stop ear, the stop ear sets up on the first connecting portion and along the length direction orientation of crossbeam is kept away from the direction of first connecting portion extends, the second mounting hole sets up on the stop ear.

Furthermore, the number of the stop lugs is two, and the two stop lugs are oppositely arranged on two sides of the first connecting part; the number of the second mounting holes is at least two, and the at least two second mounting holes are respectively arranged on the two stop lugs.

In a second aspect, the present disclosure provides a battery pack, including the battery pack case described above.

In a third aspect, the present disclosure provides a vehicle including the battery pack described above.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

the battery pack box, the battery pack and the vehicle provided by the disclosure comprise a cross beam, a longitudinal beam and a connecting structure; the connecting structure comprises a first connecting portion and a second connecting portion which are connected with each other, the first connecting portion is connected with the longitudinal beam, and the second connecting portion is connected with the cross beam. Based on this, crossbeam and longeron in the battery package box that this disclosure provided can link together through connection structure, have avoided welding stress that welding connection exists among the prior art and to the softening of crossbeam, longeron material, and joint strength is high, stability is good, has also improved the bulk strength and the reliability of battery package box to a certain extent.

As a specific embodiment, the beam is provided with a jack matched with the first connecting part, the first connecting part penetrates through the jack and is connected with the longitudinal beam, and the first connecting part and the longitudinal beam are relatively fixed; the second connecting portion support the top on the one side of the crossbeam that deviates from the longeron to be connected with the crossbeam, second connecting portion and crossbeam relatively fixed. When specifically using, first connecting portion run through behind the jack on the crossbeam and with longeron fixed connection together, meanwhile, second connecting portion backstop in the crossbeam deviate from the longeron one side on and with crossbeam fixed connection together, through first connecting portion run through jack and second connecting portion support the top at the crossbeam deviate from such means of the one side of longeron, welding stress and to the crossbeam that welding connection exists among the avoiding prior art, under the prerequisite of the softening of longeron material, further improve the rationality of crossbeam and longeron assembly layout, make assembly structure compacter, practice thrift the overall arrangement space.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a battery pack case according to an embodiment of the present disclosure;

fig. 2 is an assembly view of a cross beam and a longitudinal beam of a battery pack case according to an embodiment of the disclosure from a first view;

fig. 3 is an assembly view of a cross beam and a longitudinal beam of a battery pack case according to an embodiment of the disclosure from a second perspective;

fig. 4 is an exploded view of a cross beam and a longitudinal beam of a battery pack case according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a connection structure of a battery pack case according to an embodiment of the present disclosure.

100, a battery pack box body; 10. a cross beam; 11. a jack; 12. a second mounting hole; 13. grooving; 20. a stringer; 21. a cavity; 22. a first mounting hole; 23. an extension portion; 30. a connecting structure; 31. a first connection portion; 32. a second connecting portion; 33. a stop lug; 40. a first assembly hole; 50. a second assembly hole; 60. an avoidance groove; 70. a first fastening structure.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

Example one

Referring to fig. 1 to 5, the present embodiment provides a battery pack case 100 including a cross member 10, a longitudinal member 20, and a connecting structure 30, wherein the connecting structure 30 includes a first connecting portion 31 and a second connecting portion 32 connected to each other, the first connecting portion 31 is connected to the longitudinal member 20, and the second connecting portion 32 is connected to the cross member 10.

As will be readily understood by those skilled in the art, the battery pack case generally includes a front frame, a rear frame, a left frame, a right frame and a bottom plate, wherein the front frame, the rear frame, the left frame and the right frame are disposed on the outer edge of the bottom plate along the circumferential direction of the bottom plate, the front frame, the rear frame, the left frame, the right frame and the bottom plate together enclose a casing forming the battery pack case, and the cross beams 10 and the longitudinal beams 20 are arranged in the casing in a staggered manner.

In this embodiment, the cross beam 10 and the longitudinal beam 20 may be extruded profiles, and of course, the cross beam 10 and the longitudinal beam 20 may also be formed by casting, injection molding, and the like, and may be optionally selected according to specific use conditions, which is not limited herein.

For convenience of connection, as shown in fig. 4, two ends of the longitudinal beam 20 have step-shaped extensions 23, and a slot 13 for avoiding the extensions 23 is opened at a position of the cross beam 10 corresponding to the longitudinal beam 20, and when the connection is specifically performed, the extension 23 at one end of the longitudinal beam 20 penetrates through the slot 13 on the cross beam 10 and abuts against the cross beam 10.

In addition, the cross beam 10 and the longitudinal beam 20 are respectively connected with the bottom plate together in a rotary tapping riveting mode, and the connection is stable and reliable.

In this embodiment, the first connecting portion 31 and the second connecting portion 32 are integrally formed by casting, injection molding, etc., and have good integrity and high connection strength, which is helpful to improve the connection strength and stability between the cross beam 10 and the longitudinal beam 20.

Through the technical scheme, the battery pack box provided by the embodiment is provided with the cross beam 10, the longitudinal beam 20 and the connecting structure 30, wherein the connecting structure 30 comprises the first connecting part 31 and the second connecting part 32 which are connected with each other, the first connecting part 31 is connected with the longitudinal beam 20, and the second connecting part 32 is connected with the cross beam 10. Based on this, the cross beam 10 and the longitudinal beam 20 in the battery pack box body provided by the disclosure can be connected together through the connecting structure 30, so that welding stress existing in welding connection in the prior art and softening of materials of the cross beam 10 and the longitudinal beam 20 are avoided, the connection strength is high, the stability is good, and the overall strength and the reliability of the battery pack box body are improved to a certain extent.

Furthermore, a jack 11 matched with the first connecting portion 31 is formed in the cross beam 10, the first connecting portion 31 penetrates through the jack 11 and is connected with the longitudinal beam 20, the first connecting portion 31 is fixed relative to the longitudinal beam 20, the second connecting portion 32 abuts against one surface of the cross beam 10, which is far away from the longitudinal beam 20, and is connected with the cross beam 10, and the second connecting portion 32 is fixed relative to the cross beam 10. During the specific use, first connecting portion 31 runs through behind the jack 11 on the crossbeam 10 and with longeron 20 fixed connection together, meanwhile, second connecting portion 32 backstop is in the same place on the one side that deviates from longeron 20 of crossbeam 10 and with crossbeam 10 fixed connection, run through jack 11 and second connecting portion 32 through first connecting portion 31 and support the means that leans on in the one side that deviates from longeron 20 of crossbeam 10, welding stress and to the crossbeam that welding connection exists among the prior art is avoided, under the prerequisite of the softening of longeron material, the rationality of crossbeam and longeron assembly layout has still further been improved, make assembly structure compacter, practice thrift the overall arrangement space.

In the present embodiment, referring to fig. 2 and 5, the first connecting portion 31 is provided with a first fitting hole 40, and the side member 20 is provided with a first mounting hole 22 matching the first fitting hole 40; the first connecting portion 31 is connected to the side member 20 by a first fastening structure 70 inserted into the first fitting hole 40 and the first mounting hole 22.

In a specific implementation, the first assembly holes 40 and the first mounting holes 22 may be threaded holes, and the first fastening structures 70 are screws or bolts and are screwed with the first assembly holes 40 and the first mounting holes 22.

According to some embodiments, the first mounting hole 40 is a blind hole and the first mounting hole 40 is a threaded hole, and the first fastening structure 70 includes a bolt and a nut that is sleeved on the bolt.

During the concrete implementation, when first connecting portion 31 runs through jack 11 and stretches into to in the cavity 21 of longeron 20, first mounting hole 22 and first pilot hole 40 align, wear to establish the bolt in first mounting hole 22 and first pilot hole 40 in proper order to with the nut backstop in the one end of keeping away from first connecting portion 31 of first mounting hole 22, be about to the nut backstop in the top of longeron 20, can be in the same place first connecting portion 31 and longeron 20 firm assembly, simple structure, convenient to use.

It can be understood that the first mounting hole 22 is a through hole and is communicated with the cavity 21 of the longitudinal beam 20, wherein an inner wall of the first mounting hole 22 may be smooth, or may have an internal thread matching with an external thread of the bolt, and may be arbitrarily selected according to a specific use condition, without being limited thereto.

In the present embodiment, referring to fig. 5, at least two first assembly holes 40 are provided at intervals along the axial direction of the first connecting portion 31, correspondingly, referring to fig. 2, at least two first mounting holes 22 are provided on the longitudinal beam 20, at least two first mounting holes 22 are provided at intervals along the length direction of the longitudinal beam 20, and one first mounting hole 22 corresponds to one first assembly hole 40, so that the first connecting portion 31 can be firmly connected with the longitudinal beam 20, the connection strength is high, and the reliability is good.

Further, at least two first fitting holes 40 are respectively formed at both sides of the cross member 10, and since the longitudinal member 20 is connected to the longitudinal member 20 after penetrating through the insertion hole 11, a part of the first fitting holes 40 is located at a side of the first connecting portion 31 far from the insertion hole 11, and a part of the first fitting holes 40 is located at a side of the first connecting portion 31 close to the insertion hole 11, so that the first connecting portion 31 and the longitudinal member 20 are more firmly connected.

In the present embodiment, referring to fig. 2, the second connecting portion 32 is provided with a second fitting hole 50, and the cross member 10 is provided with a second mounting hole 12 matching with the second fitting hole 50; the second connecting portion 32 and the cross member 10 are connected by a second fastening structure (not shown) inserted into the second fitting hole 50 and the second mounting hole 12.

As an alternative embodiment, the second mounting hole 12 and the second mounting hole 50 are through holes, the second fastening structure is a rivet, and the cross beam 10 and the second connecting portion 32 are connected together by the rivet inserted into the second mounting hole 12 and the second mounting hole 50, so that the structure is simple and the connection is reliable.

As another alternative embodiment, the second mounting hole 12 and the second mounting hole 50 are threaded holes, the second fastening structure is a bolt, and the cross beam 10 and the second connecting portion 32 are connected together by the bolt inserted into the second mounting hole 12 and the second mounting hole 50, so that the structure is simple and the connection is reliable.

When the first connecting portion 31 penetrates through the insertion hole 11 and extends into the cavity 21 of the longitudinal beam 20, the second mounting hole 12 and the second assembling hole 50 are aligned, and the second connecting portion 32 and the cross beam 10 can be firmly assembled together through the second fastening structure, so that the structure is simple and the use is convenient.

Further, referring to fig. 2 and 5, the second connecting portion 32 includes a stop lug 33, the stop lug 33 is disposed on the first connecting portion 31 and extends in a direction away from the first connecting portion 31 along the length direction of the cross beam 10, when the first connecting portion 31 penetrates through the insertion hole 11 and extends into the cavity 21 of the longitudinal beam 20, the stop lug 33 abuts on a side of the mounting hole away from the cavity 21 of the longitudinal beam 20, that is, the stop lug 33 abuts on the outer surface of the cross beam 10, and at this time, the second mounting hole 12 may be disposed on the stop lug 33, which helps to improve the connection strength and reliability of the second connecting portion 32 and the cross beam 10.

It is understood that there may be one stopping lug 33, and of course, there may be two stopping lugs 33, and when there are two stopping lugs 33, the two stopping lugs 33 are oppositely disposed at two sides of the first connecting portion 31, there are at least two second mounting holes 12, and at least two second mounting holes 12 are respectively disposed on the two stopping lugs 33, so that the second connecting portion 32 and the cross beam 10 are more firmly connected.

According to some embodiments, when the second mounting holes 12 are plural, the plural second mounting holes 12 are disposed on the second connecting portion 32 at intervals along the length direction of the second connecting portion 32, and preferably, at least one second mounting hole 12 is disposed on each of the stopping lugs 33, which helps to improve the connection strength and reliability of the second connecting portion 32 and the cross beam 10.

In the present embodiment, the longitudinal beam 20 has a cavity 21 matching the first connection portion 31, and the first connection portion 31 penetrates through the insertion hole 11 and extends into the cavity 21 and is connected to the longitudinal beam 20.

When the device is used specifically, two ends of the longitudinal beam 20 are abutted to two different cross beams 10 respectively, namely, the extension parts 23 at the two ends of the longitudinal beam 20 penetrate through the slots 13 of the two different cross beams 10 respectively and are abutted to the cross beams 10 positioned on the same side; the longitudinal beams 20 and the cross beams 10 are connected together by a connecting structure 30. Specifically, the first connecting portion 31 penetrates through the insertion hole 11 on the cross beam 10, extends into the cavity 21 of the longitudinal beam 20, and is fixedly connected with the longitudinal beam 20; when first connecting portion 31 stretches into in the cavity 21 of longeron 20, second connecting portion 32 backstop on crossbeam 10 and can with crossbeam 10 fixed connection, thereby can link crossbeam 10 and longeron 20 in the battery package box together through connection structure 30, need not the welding, the installation is convenient with the dismantlement, welding stress and to crossbeam 10, the softening of longeron 20 material that welding connection exists among the prior art have also been avoided, based on this, link together crossbeam 10 and longeron 20 through connection structure 30, joint strength is high, good stability, the bulk strength and the reliability of battery package box have been improved to a certain extent.

Referring to fig. 3, it can be understood that the height of the cavity 21 is not less than the opening size of the insertion hole 11 in the height direction of the cross beam 10, that is, when the insertion hole 11 and the cavity 21 of the longitudinal beam 20 are aligned, the height of the top wall of the cavity 21 is not less than the height of the top wall of the insertion hole 11, and the height of the bottom wall of the cavity 21 is not greater than the height of the bottom wall of the insertion hole 11, so that the first connecting portion 31 can penetrate through the insertion hole 11 and extend into the cavity 21 of the longitudinal beam 20, and the connection is facilitated.

Further, referring to fig. 3 and 5, when the height of the top wall of the cavity 21 is greater than the height of the top wall of the insertion hole 11, that is, the projection of the top wall of the cavity 21 on the cross beam 10 is higher than the top of the insertion hole 11, an avoiding groove 60 for avoiding the cross beam 10 is formed at a position of the first connecting portion 31 corresponding to the cross beam 10, and at this time, the height of the cavity 21 is greater than the height of the first connecting portion 31.

According to some embodiments, when the first fitting hole 40 is plural, the plural first fitting holes 40 are divided at both sides of the escape slot.

During the specific use, run through jack 11 with first connecting portion 31 and stretch into in the cavity 21 of longeron 20, because the height at the roof place of cavity 21 is greater than the height at the roof place of jack 11, at this moment, have the clearance between the roof of first connecting portion 31 and cavity 21, during the assembly, need will insert the first connecting portion 31 rebound in jack 11 and cavity 21, meanwhile, the crossbeam 10 of jack 11 top is just in time located and dodges the groove 60, thereby can make the roof laminating of first connecting portion 31 and cavity 21, and then conveniently be in the same place first connecting portion 31 and longeron 20 fixed connection.

According to some embodiments, when the height of the top wall of the cavity 21 is equal to the height of the top wall of the insertion hole 11, the first connecting portion 31 penetrates through the insertion hole 11 and extends into the cavity 21 of the longitudinal beam 20, and the first connecting portion 31 can be attached to the top wall of the cavity 21.

In this embodiment, in order to avoid effectively, the groove height of avoiding groove 60 is not less than the difference in height between the top wall of cavity 21 and the top wall of insertion hole 11, so design, run through insertion hole 11 with first connecting portion 31 and stretch into to longeron 20's cavity 21 back, when inserting first connecting portion 31 rebound in insertion hole 11 and cavity 21, the crossbeam 10 part that the jack 11 top needs to avoid can be held in avoiding groove 60 completely, thereby make the roof of first connecting portion 31 and cavity 21 closely laminate, conveniently be in the same place first connecting portion 31 and longeron 20 fixed connection, help improving the joint strength and the reliability of first connecting portion 31 and longeron 20 to a certain extent.

Example two

The embodiment provides a battery pack, which comprises the battery pack box body in the first embodiment.

The battery pack case in this embodiment has the same structure as the battery pack case provided in the first embodiment, and can bring about the same or similar technical effects, and details are not repeated here, and specific reference may be made to the description of the above embodiment.

EXAMPLE III

The present embodiment provides a vehicle including the battery pack of the second embodiment.

The battery pack in this embodiment has the same structure as the battery pack provided in the second embodiment, and can bring about the same or similar technical effects, and details are not repeated herein, and reference may be specifically made to the description of the above embodiments.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The battery pack box is characterized by comprising cross beams (10), longitudinal beams (20) and a connecting structure (30);

the connecting structure (30) comprises a first connecting portion (31) and a second connecting portion (32) which are connected with each other, the first connecting portion (31) is connected with the longitudinal beam (20), and the second connecting portion (32) is connected with the cross beam (10).

2. The battery pack box according to claim 1, wherein the cross member (10) is provided with an insertion hole (11) matched with the first connecting portion (31), and the first connecting portion (31) penetrates through the insertion hole (11) and is connected with the longitudinal member (20) so that the first connecting portion (31) and the longitudinal member (20) are relatively fixed; the second connecting portion (32) abuts against one surface, away from the longitudinal beam (20), of the cross beam (10) and is connected with the cross beam (10) so that the second connecting portion (32) and the cross beam (10) are relatively fixed.

3. The battery pack case according to claim 2, wherein the first connecting portion (31) is provided with a first fitting hole (40), and the side member (20) is provided with a first mounting hole (22) matching the first fitting hole (40);

the first connecting portion (31) is connected with the longitudinal beam (20) through a first fastening structure (70) penetrating through the first assembly hole (40) and the first mounting hole (22).

4. The battery pack case according to claim 3, wherein the first fitting holes (40) are at least two, at least two of the first fitting holes (40) are provided at intervals in the axial direction of the first connecting portion (31), the first mounting holes (22) are at least two, and one of the first mounting holes (22) corresponds to one of the first fitting holes (40); and/or the presence of a gas in the gas,

at least two first assembling holes (40) are respectively arranged on two sides of the cross beam (10).

5. The battery pack case according to any one of claims 2 to 4, wherein the longitudinal beam (20) has a cavity (21) matching the first connection portion (31), and the first connection portion (31) penetrates through the insertion hole (11) and protrudes into the cavity (21) and is connected to the longitudinal beam (20).

6. The battery pack case according to claim 5, wherein when the height of the top wall of the cavity (21) is greater than the height of the top wall of the insertion hole (11), an avoiding groove (60) for avoiding the cross beam (10) is formed at a position of the first connecting portion (31) corresponding to the cross beam (10).

7. The battery pack case according to claim 6, wherein the height of the escape groove (60) is not less than the height difference between the top wall of the cavity (21) and the top wall of the insertion hole (11).

8. The battery pack case according to claim 1, wherein the second connecting portion (32) is provided with a second fitting hole (50), and the cross member (10) is provided with a second mounting hole (12) matching with the second fitting hole (50);

the second connecting part (32) is connected with the cross beam (10) through a second fastening structure which is arranged in the second assembling hole (50) and the second mounting hole (12) in a penetrating mode.

9. The battery pack case according to claim 8, wherein the second connecting portion (32) includes a stopper lug (33), the stopper lug (33) is provided on the first connecting portion (31) and extends in a direction away from the first connecting portion (31) in a length direction of the cross member (10), and the second mounting hole (12) is provided on the stopper lug (33).

10. The battery pack case according to claim 9, wherein the number of the stopping lugs (33) is two, and the two stopping lugs (33) are oppositely arranged at both sides of the first connecting portion (31); the number of the second mounting holes (12) is at least two, and the at least two second mounting holes (12) are respectively arranged on the two stop lugs (33).

11. A battery pack characterized by comprising the battery pack case according to any one of claims 1 to 10.

12. A vehicle characterized by comprising the battery pack according to claim 11.