CN218005085U

CN218005085U - Battery package box, battery package and vehicle

Info

Publication number: CN218005085U
Application number: CN202123058317.5U
Authority: CN
Inventors: 刘杨彬
Original assignee: Beijing Chehejia Automobile Technology Co Ltd
Current assignee: Beijing Chehejia Automobile Technology Co Ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-12-09
Anticipated expiration: 2031-12-07

Abstract

The utility model relates to the technical field of vehicles, especially, relate to a battery package box, battery package and vehicle. The utility model provides a battery package box includes crossbeam and boundary beam, follows the length direction of crossbeam, the tip of crossbeam is formed with the mount pad, the boundary beam with the connection can be dismantled to the mount pad. The battery pack that this disclosure provided includes the battery pack box that this disclosure provided. The vehicle that this disclosure provided includes the battery package that this disclosure provided. The utility model provides a battery package box, battery package and vehicle, through the detachable connections's of crossbeam and boundary beam mode, can realize the nimble assembly of boundary beam and crossbeam, can dismantle with the mount pad through the boundary beam and be connected, avoided using welded connection crossbeam and boundary beam, when having avoided crossbeam and boundary beam tailor-welding, partial region is because the space is narrow and small, can't satisfy welder's use operating space to can't realize the problem of full welding and guarantee the leakproofness.

Description

Battery package box, battery package and vehicle

Technical Field

The utility model relates to the technical field of vehicles, especially, relate to a battery package box, battery package and vehicle.

Background

In the electric automobile technical field, the battery package plays irreplaceable important role as electric automobile's power supply, and the battery package generally includes the box and sets up in the inside battery unit of box etc..

The battery pack box is one of core components of the battery pack, and an accommodating cavity for accommodating the battery unit is formed inside the battery pack box. Traditional battery package box mainly includes left boundary beam, right boundary beam, front end plate, rear end version and middle part crossbeam, and traditional battery package box is mostly the aluminum alloy tailor-welding, wherein, because when crossbeam and boundary beam tailor-welding, the use operating space of welder can't be satisfied to the subregion because the space is narrow and small to be unfavorable for the assembly of crossbeam and boundary beam.

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.

The first aspect of the present disclosure provides a battery pack case, including: the beam and the boundary beam are arranged along the length direction of the beam, a mounting seat is formed at the end part of the beam, and the boundary beam is detachably connected with the mounting seat.

Further, the mounting seat comprises a mounting surface, and the mounting surface is abutted to the side beam;

the mounting surface is provided with a first groove, and a sealing piece is arranged in the first groove.

Furthermore, the mounting surface is provided with a plurality of first grooves which are arranged at intervals, and the sealing elements are arranged in the first grooves.

Further, the sealing element comprises a side wall for matching with the first groove, and the side wall is provided with a protrusion.

Further, a plurality of the protrusions are arranged at intervals on the side wall.

Further, along the length direction of the cross beam, the end part of the cross beam comprises an abutting surface, and the abutting surface is used for abutting against the cross beam;

the mounting seat is arranged on the abutting surface.

Furthermore, a second groove is formed in the abutting surface, and a fit clearance is formed between the bottom surface of the second groove and the side beam.

Furthermore, the abutting surface is provided with a plurality of installation seats, and the installation seats are symmetrical relative to the center of the second groove.

The second aspect of the present disclosure provides a battery pack, which includes the battery pack case.

A third aspect of the present disclosure provides a vehicle including the battery pack.

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

the battery pack box that this disclosed embodiment provided includes crossbeam and boundary beam, and along the length direction L of crossbeam, the tip of crossbeam is formed with the mount pad, and the boundary beam can be dismantled with the mount pad and be connected, through the detachable connections's of crossbeam and boundary beam mode promptly, can realize the nimble assembly of boundary beam and crossbeam.

In addition, when the cross beam and the side beam are spliced and welded, the use and operation space of the welding gun cannot be met due to narrow space in partial areas, and therefore full welding cannot be achieved. This disclosed embodiment can dismantle with the mount pad through the boundary beam and be connected, has avoided using welded connection crossbeam and boundary beam to when having avoided crossbeam and boundary beam to tailor-weld, partial region can't satisfy welder's use operating space because the space is narrow and small, thereby can't realize full welding and ensure the problem of leakproofness.

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 embodiments or technical solutions in the prior art description will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

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

fig. 2 is an exploded view of an assembly of a side rail and a cross rail in a battery pack case according to an embodiment of the disclosure;

FIG. 3 is an enlarged view of bit map 2 at a;

fig. 4 is a schematic cross-sectional structural view of a battery pack case according to an embodiment of the present disclosure;

fig. 5 is an enlarged view of fig. 4 at b.

Reference numerals: 1. a cross beam; 2. a mounting base; 21. a mounting surface; 211. a first groove; 212. a second groove; 3. a boundary beam; 4. a fastener; 5. a seal member; 51. a protrusion; 6. an end plate; 7. and (4) a threaded sleeve.

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.

The battery pack comprises a box body and a battery module arranged on the box body, wherein the box body can be made of aluminum, aluminum alloy or other metal materials, and an accommodating cavity is formed in the box body.

In a specific embodiment, the box body is of a box body structure with an open top, and comprises an upper box cover, the size of the upper box cover is equivalent to that of an opening at the top of the box body, and the upper box cover can be fixed to the opening through fixing pieces such as bolts, so that an accommodating cavity is formed. Meanwhile, in order to improve the sealing performance of the box body, a sealing element can be arranged between the upper box cover and the box body.

In some specific embodiments, one or more than two battery modules can be accommodated in the accommodating cavity of the box body, the battery modules can be arranged in the box body along the length direction of the battery pack or arranged side by side along the width direction of the battery pack, and each battery module is fixed with the box body.

Specifically, the battery module includes a plurality of battery cells, wherein the battery cells may be secondary batteries that can be repeatedly charged and discharged, and the plurality of battery cells are stacked one on another, and the stacking direction may be a length direction, a width direction, or a height direction.

The battery cell includes a case, which may have a hexahedral shape or other shapes, and a receiving chamber is formed inside the case to receive an electrode assembly and an electrolyte. The housing may comprise a metallic material, such as aluminum or an aluminum alloy, and may also comprise an insulating material, such as plastic, and the like.

The traditional battery pack box mainly comprises a frame formed by a left side beam 3, a right side beam 3, a front end plate 6, a rear end plate and a middle cross beam 1. The traditional frame is mainly formed by aluminum alloy tailor welding, and the common welding processes include MIG, TIG, CTM and FSW. The welded case frame is supplied as an assembly component to the battery pack. The battery pack box body is connected with the following defects by welding: the strength of a heat affected zone of a welding seam after the frame is tailor-welded is poor, and is only 50% -70% of that of a base material generally; the welding of the transverse longitudinal beam and the side beam 3 is always at the corner position, welding leakage is easy to penetrate due to the existence of splicing gaps, secondary repair welding is needed, and the welding yield is easily influenced by equipment, manpower and external environment; the frame is welded and then supplied as an assembly, so that the parts are large in area, large in occupied space and high in transportation cost; when the cross beam 1, the longitudinal beam and the boundary beam 3 inside the battery frame are welded together, the use and operation space of a welding gun cannot be met due to narrow space in partial areas, so that full welding cannot be realized and the sealing performance cannot be ensured.

Based on this, the embodiment of the present disclosure provides a battery pack case, a battery pack, and a vehicle, and flexible assembly of the side beam 3 and the side beam 1 and reliable sealing of the joint can be achieved by means of the detachable connection of the side beam 1 and the side beam 3.

The battery pack box body provided by the embodiment of the disclosure comprises a cross beam 1 and a boundary beam 3, wherein the end part of the cross beam 1 is provided with a mounting seat 2 along the length direction L of the cross beam 1, the boundary beam 3 is detachably connected with the mounting seat 2, namely, the boundary beam 3 and the cross beam 1 can be flexibly assembled in a detachable connection mode of the cross beam 1 and the boundary beam 3. When the cross beam 1 and the side beam 3 are welded together, the use and operation space of a welding gun cannot be met due to narrow space in partial areas, and therefore full welding cannot be achieved. This disclosed embodiment can dismantle with mount pad 2 through boundary beam 3 and be connected, has avoided using welded connection crossbeam 1 and boundary beam 3 to when having avoided crossbeam 1 and boundary beam 3 to splice, partial region is because the space is narrow and small, can't satisfy welder's use operating space, thereby can't realize full welding and ensure the problem of leakproofness.

As shown in fig. 1, fig. 2, fig. 3, fig. 4, and fig. 5, the battery pack case provided by the embodiment of the present disclosure includes a cross beam 1 and a side beam 3, wherein an installation seat 2 is formed at an end of the cross beam 1 along a length direction L of the cross beam 1, and the installation seat 2 may be rectangular, square, or cylindrical. Boundary beam 3 and mount pad 2 detachable connection, through crossbeam 1 and boundary beam 3's detachable connection's mode promptly, can realize boundary beam 3 and crossbeam 1's nimble assembly and the reliable sealed of junction. Because crossbeam 1 and boundary beam 3 can dismantle the connection, for holistic battery package box, crossbeam 1 and boundary beam 3 that have the battery package box split to become are less for holistic battery package box area, and occupation space is little. Can transport crossbeam 1 and boundary beam 3 respectively, assemble crossbeam 1 and boundary beam 3 again after the transportation targets in place, it is convenient to transport, and the flexibility ratio is high.

The detachable connection of the boundary beam 3 and the cross beam 1 is realized through the detachable connection of the boundary beam 3 and the mounting seat 2, and the battery pack box body does not need to use a welding process, so that the defects of thermal deformation, low strength and the like caused by welding can be avoided, and the problem that the form and position tolerance cannot be guaranteed due to the use of welding is avoided. Because welding is not used, the weight of the battery pack box can be reduced, the whole vehicle is lighter, meanwhile, the cost in the production process of the battery pack box can be reduced, the production procedures of the battery pack box are reduced, the forming efficiency of the battery box is effectively improved, and the production period is shortened. Due to the fact that welding is not used, the problem that when the cross beam 1 and the side beam 3 are welded in a splicing mode, due to the fact that the space of a part of the area is narrow, the use operation space of a welding gun cannot be met, full welding cannot be achieved, and sealing performance is guaranteed is solved.

Optionally, along the length direction L of crossbeam 1, the both ends of crossbeam 1 all are formed with mount pad 2, can dismantle respectively with boundary beam 3 with the both ends of crossbeam 1 and link. Optionally, two mounting seats 2 are formed at two ends of the cross beam 1; optionally, three mounting seats 2 are formed at two ends of the cross beam 1; optionally, a plurality of mounting seats 2 are formed at both ends of the cross beam 1.

Optionally, the mounting base 2 is connected with the edge beam 3 through a fastener 4; optionally, the mounting base 2 is connected with the edge beam 3 through clamping.

The crossbeam 1 can adopt the integral type structure, specifically can be through the casting shaping, and the casting shaping can combine wall thickness, machining, assembly or welding other parts according to the atress operating mode, and the design is nimble, can effectively solve individualized demand. Through setting up mounting hole and mounting groove at crossbeam 1, make crossbeam 1 have multiple functions, can realize quick integrated shaping production for the production beat improves the product uniformity. The beam 1 can be made of magnesium alloy materials, and can reduce the weight by 33% compared with the traditional aluminum alloy materials and reduce the weight by more than 60% compared with the traditional steel materials.

The battery pack generally distinguishes a dry area and a wet area, the dry area is an electrified area such as a module in the battery pack, the wet area is completely exposed in a natural environment, in some specific embodiments, the mounting seat 2 includes a mounting surface 21, preferably, the mounting surface 21 is a plane, and the mounting surface 21 abuts against the boundary beam 3. The mounting surface 21 is provided with a first groove 211, and a sealing member 5 is arranged in the first groove 211. When water, air or dust comes to the matching clearance position of the cross beam 1 and the edge beam 3, the water, the air or the dust can be separated by the sealing element 5, so that the internal and external isolation sealing effect is realized. Through set up sealing member 5 in first recess 211, improved the reliability of the sealed of boundary beam 3 and crossbeam 1's interface, through crossbeam 1 and the connection of dismantling of boundary beam 3, can realize the nimble assembly and the reliable sealed of boundary beam 3 and crossbeam 1.

The number of the first grooves 211 can be one, two or three, 8230, preferably, more than two first grooves 211 can be provided to ensure reliable sealing between the cross beam 1 and the edge beam 3. Optionally, a plurality of first grooves 211 are formed in the mounting surface 21, the first grooves 211 are arranged at intervals, and a sealing ring is arranged in each first groove 211, so that the sealing reliability of the cross beam 1 and the side beam 3 is improved.

The sealing element 5 can be a sealing glue or a sealing ring. When the sealing element 5 is a sealing ring, the sealing element can be an O-shaped sealing ring, and the O-shaped sealing ring is stressed and compressed, so that the effect of sealing the joint of the boundary beam 3 and the cross beam 1 is achieved, the process installation is simple, and the durability and the reliability are better.

In some specific embodiments, the mounting surface 21 is provided with a plurality of first grooves 211, the plurality of first grooves 211 are arranged at intervals, and the plurality of first grooves 211 are provided with the sealing members 5, so that the reliability of sealing the connection interface between the edge beam 3 and the cross beam 1 is improved. Preferably, the mounting surface 21 is provided with a plurality of first grooves 211 which are uniformly spaced outwards along the surrounding center of the first grooves 211, so that the reliability of sealing the connecting interface between the boundary beam 3 and the cross beam 1 is improved.

In some specific embodiments, along the length direction of the cross beam 1, the end of the cross beam 1 comprises an abutment surface for abutment with the cross beam; the mounting seat 2 is arranged on the abutting surface, so that the connection stability of the cross beam 1 and the boundary beam 3 can be improved.

In some embodiments, the abutting surface defines a second groove 212, and a fit gap is formed between a bottom surface of the second groove 212 and the edge beam 3. The heat transfer path between the cross beam 1 and the boundary beam 3 is changed into small-surface contact through large-surface heat transfer of the abutting surface and the boundary beam 3, the second groove 212 is formed in the abutting surface, the connecting surface of the cross beam 1 and the boundary beam 3 is reduced, namely the contact area of the cross beam 1 and the boundary beam 3 is reduced, and the heat exchange is reduced.

In some specific embodiments, the abutting surface is provided with a plurality of mounting seats 2, and the plurality of mounting seats 2 are symmetrical with respect to the center of the second groove 212, so that the stability of the connection between the cross beam 1 and the side beam 3 can be improved.

In some embodiments, the sealing member 5 includes a sidewall for cooperating with the first groove 211, the sidewall may be a surface opposite to the sidewall of the first groove 211, and the sidewall is provided with a protrusion 51, and the protrusion 51 is compressed by a force so that the sealing member 5 can be firmly clamped in the first groove 211.

In some embodiments, a plurality of protrusions 51 are spaced apart on the sidewalls. Specifically, when the sealing element 5 is a sealing ring, a plurality of protrusions 51 may be disposed on an end surface of the sealing ring facing the side wall of the first groove 211, and the protrusions 51 are disposed at intervals in the circumferential direction of the sealing ring, so that the sealing ring is firmly clamped in the first groove 211.

In some embodiments, the edge beam 3 is coupled to the mounting base 2 by fasteners 4. The fastener 4 may be a bolt, screw, or the like. Crossbeam 1 and boundary beam 3 pass through the assembly structure of fastener 4 to adopt sealing member 5 sealed at the interface of connection, can solve and adopt fastener 4 to connect the sealed problem that replaces welded connection to bring, when convenient to detach installs, improved the reliability and the leakproofness that crossbeam 1 and boundary beam 3 are connected. Because the connection of the boundary beam 3 and the mounting seat 2 does not need to use a welding process, the defects of thermal deformation, low strength and the like caused by welding can be avoided, and the problem that form and position tolerance cannot be guaranteed due to welding is avoided. When the cross beam 1 and the boundary beam 3 are spliced and welded, the problems that the use operation space of a welding gun cannot be met due to narrow space in a part of regions, full welding cannot be realized, and sealing performance is ensured are solved.

In some embodiments, the mounting seat 2 is provided with a first mounting hole, the edge beam 3 is provided with a second mounting hole, and the fastener 4 passes through the second mounting hole and the first mounting hole to connect the edge beam 3 and the cross beam 1. During transportation, the cross beam 1 and the side beam 3 can be transported respectively, the transportation is convenient, and the flexibility is high. And after the beam is transported to the place, the fastener 4 penetrates through the second mounting hole and the first mounting hole to connect the beam 1 and the boundary beam 3. When one of the boundary beam 3 and the cross beam 1 is damaged, only the damaged part needs to be replaced, and the part which is not damaged can be continuously used, so that the replacement cost is saved. The second mounting hole and the first mounting hole are in an assembly structure through the fastener 4, and the sealing element 5 is adopted for sealing at the connecting interface, so that the sealing problem caused by connection of the fastener 4 can be solved, and the reliability and the sealing property of connection between the cross beam 1 and the boundary beam 3 are improved while the mounting and dismounting are convenient.

The first mounting hole can be a through hole or a threaded hole; the second mounting hole can be a through hole or a threaded hole.

The first groove 211 is disposed around the first mounting hole, and a sealing member 5 is disposed in the first groove 211. When water, air or dust comes to the matching clearance position of the cross beam 1 and the edge beam 3, the water, the air or the dust can be separated by the sealing element 5, so that the internal and external isolation sealing effect is realized. Pass through second mounting hole and be connected boundary beam 3 and crossbeam 1 with first mounting hole through fastener 4, can realize the nimble assembly and the reliable sealed of boundary beam 3 and crossbeam 1.

In some embodiments, the first mounting hole is provided with a threaded sleeve 7, and the fastener 4 is threaded through the second mounting hole to connect with the threaded sleeve 7. When the cross beam 1 is formed by die casting, the steel wire thread bush 7 is embedded in the first mounting hole due to the lower hardness of a die casting, so that the problems of continuous dismounting and mounting of sliding teeth, torsion attenuation and the like can be solved. The fastener 4 passes through the second mounting hole and is in threaded connection with the threaded sleeve 7, and the defect that the welding performance of the die casting is poor is overcome. The second mounting hole and the threaded sleeve 7 are assembled through the fastener 4, and the sealing element 5 is adopted for sealing at the connecting interface, so that the sealing problem caused by the connection of the fastener 4 can be solved, and the reliability and the sealing property of the connection between the cross beam 1 and the boundary beam 3 are improved while the assembly and disassembly are convenient. With reference to the sealing structure, the material selection and the structural form of the beam 1 part in the battery pack can be liberated; the die casting can realize more structural characteristics, and the increase of working hours and cost caused by machining and welding is greatly reduced.

The battery pack provided by the embodiment of the disclosure comprises a battery pack box body provided by the embodiment of the disclosure. The vehicle that this disclosed embodiment provided includes the battery package that this disclosed embodiment provided. Since the battery pack or the vehicle provided by the embodiment of the disclosure has the same advantages as the battery pack case provided by the embodiment of the disclosure, the description is omitted here.

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 phrases "comprising a component of' 8230; \8230;" does not exclude the presence of additional identical elements in the 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. A battery pack box, its characterized in that includes: the mounting device comprises a cross beam and an edge beam, wherein a mounting seat is formed at the end part of the cross beam along the length direction of the cross beam, and the edge beam is detachably connected with the mounting seat;

the mounting seat comprises a mounting surface, and the mounting surface is abutted with the edge beam;

2. The battery pack case of claim 1, wherein the mounting surface defines a plurality of first grooves, the first grooves are spaced apart from each other, and the sealing members are disposed in the first grooves.

3. A battery pack case according to claim 1, wherein the sealing member includes a side wall for engaging with the first groove, the side wall being provided with a projection.

4. A battery pack case according to claim 3, wherein a plurality of the protrusions are provided at intervals on the side wall.

5. The battery pack case according to any one of claims 1 to 4, wherein an end portion of the cross member in a length direction of the cross member includes an abutment surface for abutment with the cross member;

the mounting seat is arranged on the abutting surface.

6. The battery pack case of claim 5, wherein the abutting surface is provided with a second groove, and a fit clearance is formed between the bottom surface of the second groove and the side beam.

7. The battery pack case according to claim 6, wherein the abutting surface is provided with a plurality of the mounting seats which are symmetrical with respect to a center of the second groove.

8. A battery pack characterized by comprising the battery pack case according to any one of claims 1 to 7.

9. A vehicle characterized by comprising the battery pack according to claim 8.