CN219467516U - Battery package suspension bracket - Google Patents

Abstract

The utility model discloses a battery pack suspension bracket, which comprises a bearing underframe connected with a plurality of lifting lugs, wherein the bearing underframe comprises an L-shaped longitudinal beam, a mouth-shaped cross beam and a convex middle beam, and a closed section is formed through a rolling process; the middle beam is parallel to the longitudinal beam and is perpendicular to the cross beam, the flange of the L-shaped longitudinal beam is coplanar with the flange of the convex middle beam, and the bottom of the bearing chassis is connected with the bottom guard plate. According to the utility model, the battery pack is restrained by the flanges of the L-shaped longitudinal beam and the convex middle beam matched with the mouth-shaped cross beam, so that the stability of battery placement is improved; the bearing underframe and the frame are connected through the lifting lug threads, the position of the lifting lug can be flexibly adjusted according to the vehicle type, and the universality of the suspension bracket is improved; the deformation resistance of the bottom guard plate is improved through the bottom guard plate stamping groove; the bottom guard board is fixed on the frame of the box body through rivets or screws, so that maintainability of the suspension bracket is improved; the rolled section adopts a high-strength steel plate and a closed cross-section structure, so that the lightweight design is ensured, and the rigidity and strength of the battery box body are improved.

Description

Battery package suspension bracket

Technical Field

The utility model relates to the technical field of battery brackets, in particular to a battery pack suspension bracket.

Background

The development of new energy automobiles is an urgent task in the world today due to worldwide energy and environmental problems caused by the automobile industry. New energy automobiles are an effective way to solve the energy and environmental problems faced by automobile traffic.

The power battery system as a core component of the new energy automobile has the bearing component suspension bracket directly related to the mechanical safety performance of the power battery. The high safety, low weight is the target of battery suspension bracket design always, and high strength steel battery suspension bracket is certainly high safe representative, possesses high safety and most battery suspension bracket at present is based on single motorcycle type development, can't be general, and battery manufacturer must throw in a large amount of manpower and materials in suspension bracket design and manufacturing aspect, consequently, promotes battery package installation stability, satisfies the multiple functional requirement that the battery used, promotes the platformization battery suspension bracket and becomes current new energy automobile battery mainstream trend.

Patent document CN217495816U discloses a battery pack suspension device comprising: a load bearing structure and a plurality of shackle structures; the bearing structure comprises a frame beam and frame longitudinal beams at two sides, and an accommodating space for bearing a battery pack is formed between the frame longitudinal beams and the frame beam; and a plurality of lifting lug structures are fixed on the outer sides of the frame longitudinal beams on two sides. The battery pack suspension device improves the anti-collision performance of the battery pack suspension device and the safety of the battery pack. But at the same time there is also: 1. the longitudinal beam and the middle beam have poor constraint on the battery pack, which is not beneficial to the stable placement of the battery pack. 2. Lifting lugs are fixed on the bearing structure through splice welding, cannot be used on multiple vehicle types, and the universality of the hanging device is poor. 3. The lower shell is used as the lowest point of the whole vehicle from the ground, is easy to be damaged by collision, has poor plane deformation resistance, is welded with a bearing structure, is not easy to replace and is easy to discard the whole suspension device. 4. The box frame does not adopt a high-strength steel plate with yield above 340MPa, the box has insufficient strength and poor safety and durability. 5. The frame section bar of the box body does not adopt a closed structure, the rigidity of the parts is poor, and the integral rigidity is insufficient.

Disclosure of Invention

The utility model aims to provide a battery pack suspension bracket, which solves the problems and can improve the stability of a battery pack, the suspension bracket part is formed by rolling high-strength steel, the position of a lifting lug can be adjusted, the universality of the suspension bracket is improved, the deformation resistance of a bottom guard plate is high, the bottom guard plate is convenient to replace and maintain, and the battery pack suspension bracket is favorable for batteries.

The aim of the utility model can be achieved by the following technical scheme: a battery pack suspension bracket comprising a load-bearing chassis 20 to which a plurality of lifting lugs 10 are attached, characterized in that: the bearing underframe 20 comprises two longitudinal beams 21 with L-shaped cross sections, at least two cross beams 22 with mouth shapes and at least one middle beam 23 with convex cross sections, the middle beam 23 is parallel to the longitudinal beams 21 and perpendicular to the cross beams 22, the flanging 211 of the L-shaped longitudinal beams is coplanar with the flanging 231 of the convex middle beam 23, and the bottom of the bearing underframe 20 is connected with a bottom guard plate 30.

As still further aspects of the utility model: the load-bearing chassis 20 further comprises at least one cross beam 24, said cross beam 24 being located between two longitudinal beams 21, said cross beam 24 being parallel to the cross beam 22.

As still further aspects of the utility model: the longitudinal beam 21, the transverse beam 22, the middle beam 23 and the transverse beam 24 are made of steel plates with yield strength of more than 420Mpa by rolling.

As still further aspects of the utility model: the bottom guard plate 30 is an integrally formed stamping part, and a plurality of stamping grooves 31 are formed after the bottom guard plate 30 is stamped.

As still further aspects of the utility model: the bottom guard plates 30 rivet the longitudinal beams 21, the transverse beams 22, the middle beams 23 and the transverse beams 24.

As still further aspects of the utility model: the bottom guard plates 30 are in threaded connection with the longitudinal beams 21, the transverse beams 22, the middle beams 23 and the transverse beams 24.

As still further aspects of the utility model: the lifting lug 10 is provided with a side screw hole and a top screw hole 11, the lifting lug 10 is in threaded connection with the longitudinal beam 21, and the lifting lug 10 is in threaded connection with the frame.

As still further aspects of the utility model: the longitudinal beam 21 is provided with a plurality of groups of screw holes 212 for connecting the lifting lugs 10 in a threaded manner, and the plurality of groups of screw holes 212 are used for adjusting the positions of the lifting lugs 10 connected with the longitudinal beam 21 in a threaded manner.

The utility model has the beneficial effects that:

1. the L-shaped longitudinal beam, the square cross beam and the convex middle beam are used for constraining the placed battery pack together, so that the stability of placing the battery is improved.

2. Lifting lug threaded connection bearing chassis and frame, the multiunit screw that is used for installing the lug has been seted up to the longeron, and the position of lug can be adjusted in a flexible way according to the motorcycle type, improves the commonality of hanging the bracket.

3. The bottom guard plate is integrally formed by stamping, the deformation resistance of the bottom guard plate is improved by the stamping groove formed by stamping, the bottom guard plate is riveted with the bearing underframe, the bottom guard plate is easy to damage and replace, and the maintainability of the suspension bracket is improved.

4. The longitudinal beam, the cross beam, the middle beam and the cross beam are manufactured by adopting a mature rolling process and are made of steel plates with the yield strength of more than 420Mpa, the suspension bracket is high in strength and not easy to deform, and the safety and the durability are enhanced.

Drawings

FIG. 1 is a schematic view of a battery pack suspension bracket according to the present utility model;

FIG. 2 is a schematic illustration of the construction of the components of a battery pack suspension bracket of the present utility model;

FIG. 3A is a cross-sectional schematic view of a cross-beam;

FIG. 3B is a schematic cross-sectional view of a center sill;

FIG. 3C is a schematic cross-sectional view of a stringer;

10. lifting lugs; 11. a top screw hole;

20. a bearing chassis; 21. a longitudinal beam; 211. flanging the longitudinal beam; 212. a screw hole; 22. a cross beam; 23. a center sill; 231. flanging the middle beam; 24. a cross bracing beam; 241. a wire opening;

30. a bottom guard board; 31. stamping a groove; 32. a rivet; 33. a gasket;

40. managing space

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar symbols indicate like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

As shown in fig. 1-3, the utility model discloses a battery pack suspension bracket, which comprises a bearing underframe 20 connected with a bottom guard plate 30 and a plurality of lifting lugs 10, wherein the bearing underframe 20 comprises two longitudinal beams 21 with L-shaped cross sections, at least two cross beams 22 with mouth-shaped cross sections and at least one middle beam 23 with convex cross sections, the middle beam 23 is parallel to the longitudinal beams 21 and vertical to the cross beams 22, the flanges 211 of the L-shaped longitudinal beams are coplanar with the flanges 231 of the convex middle beam 23, and the bottom of the bearing underframe 20 is connected with the bottom guard plate 30.

As shown in fig. 3A, 3B, and 3C, the cross beam 21 is L-shaped in cross section, which is perpendicular to the longitudinal direction of the cross beam 21, the cross beam 22 is mouth-shaped in cross section, which is perpendicular to the longitudinal direction of the cross beam 22, and the center sill 23 is convex in cross section, which is perpendicular to the longitudinal direction of the center sill 23. As shown in fig. 1, the lifting lugs 10 are symmetrically connected with the bearing underframe 20 to keep the bearing underframe 20 stable, when the battery pack is placed on the hanging bracket, the L-shaped longitudinal beam flanges 211 and the convex middle beam 23 flanges 231 are coplanar to provide stable bottom support for the battery pack, the battery is constrained by the longitudinal beam 21, the middle beam 23 and the cross beam 22 together, the bottom guard plate 30 provides protection for the bottom surface of the battery, and the safety and stability of the battery placement are improved.

Further, the size of the suspension bracket is adjusted according to the vehicle type requirement, when more than two battery packs are placed, as shown in fig. 1, at least one cross beam 24 is installed between the two longitudinal beams 21, so that each battery pack is provided with an independent installation space to prevent collision and interference between the battery packs, a wire port 241 is formed in the cross beam 24 for connecting the circuit between the battery packs, and meanwhile, three cross beams 22 are adopted as the bearing underframe 20, wherein a middle beam 23 is not installed in a management space 40 formed between the two cross beams 22, and the battery packs are not placed but are used for placing battery management modules.

Further, the longitudinal beam 21, the transverse beam 22, the middle beam 23 and the transverse beam 24 are made of steel plates with yield strength of more than 420Mpa by rolling. At present, the rolling process is mature, the steel plate is rolled by adopting the rolling process, the high strength of the steel plate can be better kept, the suspension bracket is high in strength, difficult to deform and enhanced in safety and durability. The weight bearing underframe 20 occupies a large proportion of the weight of the battery pack suspension bracket system, the existing weight bearing underframe 20 is generally made of common steel, the yield strength is below 340MPa, a certain thickness is required to be used for manufacturing the longitudinal beam 21, the transverse beam 22, the middle beam 23 and the transverse beam 24 of the weight bearing underframe 20 to ensure the strength of the weight bearing underframe 20, the weight bearing underframe 20 can be definitely increased, the longitudinal beam 21, the transverse beam 22, the middle beam 23 and the transverse beam 24 are made of steel plates with the yield strength above 420MPa through rolling, the original strength of the steel plates can be maintained through rolling, and the weight reduction effect of the weight bearing underframe 20 can be realized under the condition of meeting the same mechanical strength, so that the suspension bracket quality is reduced.

Further, the bottom guard plate 30 is formed by integrally forming stamping parts, a plurality of stamping grooves 31 are formed in the bottom guard plate 30 by stamping, the road condition of running of the vehicle is unpredictable, the battery pack is taken as the lowest point of the whole vehicle from the ground, the bottom guard plate 30 faces to impact and destroy the ground all the time, when a large stone is rubbed against the bottom, the slight deformation of the bottom guard plate 30 can be absorbed by the stamping grooves 31, the bottom guard plate 30 with the stamping grooves 31 has stronger impact resistance relative to a plane plate, meanwhile, after the gasket 33 is additionally arranged on the bottom guard plate 30, the longitudinal beam 21, the cross beam 22, the middle beam 23 and the cross beam 24 are riveted by rivets 32, when the bottom guard plate 30 is severely deformed and needs to be maintained or replaced, the riveting can be convenient for disassembling and replacing the bottom guard plate 30, the maintainability of the suspended bracket bottom guard plate 30 is improved, the riveting is only one mode of connecting the bottom guard plate 30 with the bearing underframe 20, the detachable connecting mode of the bottom guard plate 30 is important to realize, and other connecting modes, such as threaded connection can be adopted. Meanwhile, the bottom guard plate 30 can be made of a high-strength steel plate, an aluminum alloy plate or a composite material plate, so that the deformation resistance of the bottom guard plate 30 is improved, and the purpose of light weight is achieved.

Further, as shown in fig. 1, the lifting lug 10 is connected with the longitudinal beam 21 through a side screw hole in a threaded manner, the lifting lug 10 is connected with the frame (not shown) through a top screw hole 11 in a threaded manner, the threaded connection is convenient for maintenance and replacement of a hanging bracket and a battery pack, meanwhile, a plurality of groups of screw holes 212 for the threaded connection of the lifting lug 10 are formed in the longitudinal beam 21, according to the change of a vehicle model, the lifting lug 10 is connected with different positions of the longitudinal beam 21 in a threaded manner, the installation of multiple vehicle models can be met only by changing the position of the lifting lug 10, the applicability of the hanging bracket is enhanced, and the universality is improved.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

It is to be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counter-clockwise," "axial," "radial," "circumferential," and the like are directional or positional relationships as indicated based on the drawings, merely to facilitate describing the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Claims (8)

1. A battery pack suspension bracket comprising a load-bearing chassis (20) to which a plurality of lifting lugs (10) are attached, characterized in that: the bearing underframe (20) comprises two longitudinal beams (21) with L-shaped cross sections, at least two cross beams (22) with mouth shapes and at least one middle beam (23) with convex cross sections, the middle beams (23) are parallel to the longitudinal beams (21) and perpendicular to the cross beams (22), flanging (211) of the L-shaped longitudinal beams are coplanar with flanging (231) of the convex middle beams (23), and the bottom of the bearing underframe (20) is connected with a bottom guard plate (30).

2. A battery pack suspension bracket as in claim 1 wherein: the bearing underframe (20) further comprises at least one transverse supporting beam (24), the transverse supporting beam (24) is positioned between the two longitudinal beams (21), and the transverse supporting beam (24) is parallel to the transverse beam (22).

3. A battery pack suspension bracket as in claim 2 wherein: the longitudinal beam (21), the transverse beam (22), the middle beam (23) and the transverse beam (24) are made of steel plates with yield strength of more than 420Mpa by rolling.

4. A battery pack suspension bracket as in claim 3 wherein: the bottom guard plate (30) is an integrally formed stamping part, and a plurality of stamping grooves (31) are formed after the bottom guard plate (30) is stamped.

5. A battery pack suspension bracket as in claim 4 wherein: the bottom guard board (30) is riveted with the longitudinal beam (21), the transverse beam (22), the middle beam (23) and the transverse bracing beam (24).

6. A battery pack suspension bracket as in claim 4 wherein: the bottom guard board (30) is in threaded connection with the longitudinal beam (21), the transverse beam (22), the middle beam (23) and the transverse strut beam (24).

7. A battery pack suspension bracket as in claim 1 wherein: the lifting lug (10) is provided with a side screw hole and a top screw hole (11), the lifting lug (10) is in threaded connection with the longitudinal beam (21), and the lifting lug (10) is in threaded connection with the frame.

8. The battery pack suspension bracket of claim 6 wherein: the longitudinal beam (21) is provided with a plurality of groups of screw holes (212) for being connected with the lifting lug (10) in a threaded mode, and the plurality of groups of screw holes (212) are used for adjusting the positions of the lifting lug (10) in threaded mode and connected with the longitudinal beam (21).