CN220934267U - Battery box and battery pack - Google Patents

Abstract

The utility model relates to the technical field of batteries, in particular to a battery box and a battery pack. Through the structural design, the connecting strength of the lifting lug and the frame can be enhanced by using the reinforcing piece, the problem of poor structural strength caused by the fact that the lifting lug is provided with an inner cavity is solved, and meanwhile, the additionally arranged external connecting structure can be avoided, and the increase of the outer wrapping space of the battery pack is avoided.

Description

Battery box and battery pack

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery box and a battery pack.

Background

In the design scheme of current battery package, the frame outside of battery box is provided with the lug, and the lug has the inner chamber for the structural strength of lug is less relatively, is difficult to satisfy the higher intensity demand of lug department, influences the hoist and mount stability of battery package. In order to solve the above problems, the existing battery pack needs to additionally provide an external connection structure, which increases the external envelope space.

Disclosure of utility model

It is therefore one of the primary objects of the present utility model to overcome at least one of the above-mentioned drawbacks of the prior art, and to provide a battery box with a high strength of connection between the lifting lug and the frame without increasing the outer envelope space.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

According to one aspect of the utility model, a battery box is provided, wherein the battery box comprises a frame, a lifting lug and a reinforcing piece, the frame is used for enclosing a cavity of the battery box, the lifting lug is arranged on the outer surface of the frame, which faces away from the cavity, the lifting lug is provided with an inner cavity, the inner cavity is provided with an avoidance opening facing the frame, and the reinforcing piece penetrates through the avoidance opening to enter the inner cavity and is respectively connected with the frame and the lifting lug.

According to the technical scheme, the battery box provided by the utility model has the advantages and positive effects that:

the battery box provided by the utility model comprises a frame, a lifting lug and a reinforcing piece, wherein the lifting lug is provided with an inner cavity, the inner cavity is provided with an avoidance opening facing the frame, and the reinforcing piece penetrates through the avoidance opening to enter the inner cavity and is respectively connected with the frame and the lifting lug. Through the structural design, the connecting strength of the lifting lug and the frame can be enhanced by using the reinforcing piece, the problem of poor structural strength caused by the fact that the lifting lug is provided with an inner cavity is solved, and meanwhile, the additionally arranged external connecting structure can be avoided, and the increase of the outer wrapping space of the battery pack is avoided.

Another principal object of the present utility model is to overcome at least one of the above-mentioned drawbacks of the prior art, and to provide a battery pack including the battery case.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

According to another aspect of the present utility model, there is provided a battery pack, wherein a battery is accommodated in the battery pack, and the battery pack according to the present utility model.

According to the technical scheme, the battery pack provided by the utility model has the advantages and positive effects that:

according to the battery pack provided by the utility model, the connection strength of the lifting lug and the frame can be enhanced by using the reinforcing piece, the problem of poor structural strength caused by the fact that the lifting lug is provided with the inner cavity is solved, and meanwhile, the addition of an external connection structure can be avoided, and the increase of the outer wrapping space of the battery pack is avoided.

Drawings

Various objects, features and advantages of the present utility model will become more apparent from the following detailed description of the preferred embodiments of the utility model, when taken in conjunction with the accompanying drawings. The drawings are merely exemplary illustrations of the utility model and are not necessarily drawn to scale. In the drawings, like reference numerals refer to the same or similar parts throughout. Wherein:

Fig. 1 is a schematic perspective view of a battery box according to an exemplary embodiment;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

FIG. 3 is another angular view of FIG. 2;

FIG. 4 is a schematic plan view of FIG. 2;

FIG. 5 is a cross-sectional view taken along line B-B in FIG. 4;

FIG. 6 is a cross-sectional view taken along line C-C of FIG. 4;

FIG. 7 is a partially exploded schematic view of the battery compartment shown in FIG. 1;

FIG. 8 is another angular view of FIG. 7;

FIG. 9 is a schematic perspective view of the stiffener shown in FIG. 2;

FIG. 10 is another angular view of FIG. 9;

Fig. 11 and 12 are schematic perspective views of the reinforcement of the battery case according to the other two exemplary embodiments, respectively.

The reference numerals are explained as follows:

100. A frame;

200. Lifting lugs;

201. a top wall;

202. A bottom wall;

210. A first welding hole;

220. Avoiding windowing;

230. A hanging cylinder;

240. An avoidance opening;

300. A reinforcing member;

301. A top plate;

3011. a top flanging;

30111. a third welding hole;

302. a bottom plate;

3021. bottom flanging;

310. A wing plate;

320. a connecting plate;

321. A second welding hole;

330. Avoiding the notch;

340. flanging;

W, width;

X, hoisting direction;

Y, width direction.

Detailed Description

Exemplary embodiments that embody features and advantages of the present utility model are described in detail in the following description. It will be understood that the utility model is capable of various modifications in various embodiments, all without departing from the scope of the utility model, and that the description and drawings are intended to be illustrative in nature and not to be limiting.

In the following description of various exemplary embodiments of the utility model, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the utility model may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized and structural and functional modifications may be made without departing from the scope of the present utility model. Moreover, although the terms "over," "between," "within," and the like may be used in this description to describe various exemplary features and elements of the utility model, these terms are used herein for convenience only, e.g., in terms of the orientation of the examples depicted in the drawings. Nothing in this specification should be construed as requiring a particular three-dimensional orientation of the structure in order to fall within the scope of the utility model.

Referring to fig. 1, a schematic perspective view of a battery box according to the present utility model is representatively illustrated. In this exemplary embodiment, the battery box according to the present utility model is described as being applied to a vehicle-mounted battery. Those skilled in the art will readily appreciate that many modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below in order to adapt the relevant designs of the present utility model to other types of battery packs, and such changes are still within the principles of the battery case presented herein.

As shown in fig. 1, in an embodiment of the present utility model, a battery box according to the present utility model includes a frame 100, a lifting lug 200, and a reinforcement 300, wherein the frame 100 is used for enclosing a cavity of the battery box, and the lifting lug 200 is disposed on an outer surface of the frame 100 facing away from the cavity. Referring to fig. 2-10 in conjunction, an enlarged schematic view of portion a of fig. 1 is representatively illustrated in fig. 2; another angular view of fig. 2 is representatively illustrated in fig. 3; FIG. 4 representatively illustrates a plan view of FIG. 2; a cross-sectional view taken along line B-B in fig. 4 is representatively illustrated in fig. 5; a cross-sectional view taken along line C-C in fig. 4 is representatively illustrated in fig. 6; a partially exploded schematic view of the battery box is representatively illustrated in fig. 7; another angular view of fig. 7 is representatively illustrated in fig. 8; a schematic perspective view of the stiffener 300 is representatively illustrated in fig. 9; another angular view of fig. 9 is representatively illustrated in fig. 10. The structure, connection mode and functional relationship of the main components of the battery case according to the present utility model will be described in detail with reference to the above drawings.

As shown in fig. 2 to 8, in an embodiment of the present utility model, the lifting lug 200 has a structure of an inner cavity. The inner cavity of the lifting lug 200 has a relief opening 240 facing the frame 100, and the stiffener 300 passes through the relief opening 240 into the inner cavity of the lifting lug 200 and is connected to the frame 100 and the lifting lug 200, respectively. Through the structural design, the utility model can strengthen the connection strength of the lifting lug 200 and the frame 100 by using the reinforcing piece 300, make up the problem of poor structural strength caused by the inner cavity of the lifting lug 200, and avoid adding an external connection structure and increasing the outer wrapping space of the battery pack.

In the embodiment shown in fig. 1 to 8, the lifting lug 200 and the stiffener 300 are respectively connected to the outer side surface of the frame 100. In some embodiments, the lifting lug 200 may be connected to the bottom surface of the frame 100, or the stiffener 300 may be connected to the bottom surface of the frame 100.

In one embodiment of the present utility model, at least a portion of the lifting lug 200 is formed by bending a sheet material, and a specific bending process may be, for example, roll forming. Accordingly, the bending part of the lifting lug 200 has an arc transition structure, and when the bending process specifically adopts roll forming, the arc transition structure of the bending part of the lifting lug 200 can be further an R angle structure. Wherein, because at least a portion of the lifting lug 200 is formed by bending, the bending position of the lifting lug 200 presents a structural feature of thickness reduction, that is, the thickness of the plate bent to form the lifting lug 200 at the bending position is smaller than that of other bending positions, which can result in further reduction of the structural strength of the lifting lug 200 and the connection strength with the frame 100. In this regard, the reinforcement 300 is adopted in the utility model, so that the structural strength of the lifting lug 200 can be improved, the connection strength of the lifting lug with the frame 100 can be enhanced, and the battery box is more suitable for the optimal application of the lifting lug 200 in a bending forming mode.

As shown in fig. 5 and 6, in an embodiment of the present utility model, a lifting direction X of the lifting lug 200 is parallel to an outer side surface of the frame 100, the lifting lug 200 has wall surfaces perpendicular to the lifting direction X, such as a top wall 201 and a bottom wall 202 shown in the drawings, to an inner surface of which a portion of the stiffener 300 is attached. Through the structural design, the utility model can further improve the structural strength of the lifting lug 200 along the lifting direction X.

As shown in fig. 2 and 3, in an embodiment of the present utility model, a wall surface of the lifting lug 200 perpendicular to the lifting direction X may be provided with a first welding hole 210, and the reinforcement 300 and the wall surface of the lifting lug 200 are welded at the first welding hole 210. Through the structural design, the utility model can facilitate the welding connection of the lifting lug 200 and the reinforcing piece 300. Note that, the top wall 201 and the bottom wall 202 of the lifting lug 200 shown in the drawings are respectively provided with a first welding hole 210. In some embodiments, the reinforcement 300 may be connected to only one of the top wall 201 and the bottom wall 202, and the lifting lug 200 may be provided with a first connecting hole only on one of the top wall 201 and the bottom wall 202, which is not limited to this embodiment.

As shown in fig. 2, based on the structural design that the wall surface of the lifting lug 200 is provided with the first welding hole 210, in an embodiment of the present utility model, the top wall 201 and the bottom wall 202 of the lifting lug 200 are both the wall surfaces provided with the first welding hole 210, that is, the top wall 201 and the bottom wall 202 of the lifting lug 200 are both provided with the first welding hole 210. For example, the first welding hole 210 formed in the top wall 201 may have a "U" shape, and the opening of the first welding hole 210 faces the frame 100. The first welding holes 210 formed in the bottom wall 202 may be long holes, and at least two first welding holes 210 arranged at intervals may be formed in the bottom wall 202.

As shown in fig. 2 to 4, in an embodiment of the present utility model, a relief window 220 may be formed on a wall surface of the lifting lug 200 perpendicular to the lifting direction X, and the relief window 220 exposes a portion of the reinforcement 300 connected to the frame 100. Through the above structural design, the utility model can provide an operation space for the connection of the reinforcement 300 and the frame 100 by using the avoidance windows 220, so that the assembly of the battery box is more convenient. Note that, the top wall 201 and the bottom wall 202 of the lifting lug 200 shown in the drawings are respectively provided with an avoidance window 220. In some embodiments, the lifting lug 200 may be provided with a relief window 220 only on one of the top wall 201 and the bottom wall 202, which is not limited to the present embodiment.

As shown in fig. 2, 3, 9 and 10, based on the structural design that the wall surface of the lifting lug 200 perpendicular to the lifting direction X is provided with the avoiding opening 220, in an embodiment of the present utility model, the wall surface of the lifting lug 200 may be a bottom wall 202 of the lifting lug 200, and the bottom wall 202 is provided with the avoiding opening 220. On this basis, at least one side (for example, but not limited to, two sides as shown in the drawings) of the reinforcement 300 is bent to form a wing 310, and an end of the wing 310 is bent to form a connection plate 320, and the connection plate 320 is connected to an outer surface of the bottom wall 202. Through the above structural design, the utility model can enable the reinforcement 300 to be connected with the outer surface of the lifting lug 200 through the connecting plate 320 on the basis that the inner cavity is connected with the inner surface of the lifting lug 200, thereby further enhancing the connection strength of the lifting lug 200 and the reinforcement 300.

As shown in fig. 3 and 9, based on the structural design of the stiffener 300 having the wing plate 310 and the connection plate 320, in an embodiment of the present utility model, the connection plate 320 may be provided with a second welding hole 321, whereby the connection plate 320 and the bottom wall 202 of the lifting lug 200 may be welded at the second welding hole 321.

As shown in fig. 5, in an embodiment of the present utility model, the width W of the lifting lug 200 may be 20mm150mm, for example, 20mm, 30mm, 50mm, 70mm, 100mm, 150mm, etc., in the width direction Y perpendicular to the outer side surface of the rim 100. Through the structural design, the utility model can avoid the problem that the structural strength of the lifting lug 200 is poor due to the overlarge width W of the lifting lug 200, and can avoid the problem that the arrangement of the hanging barrel 230 cannot be met due to the overlarge width W of the lifting lug 200.

As shown in fig. 7 and 8, in an embodiment of the present utility model, the lifting lug 200 is provided with a lifting cylinder 230, and the lifting cylinder 230 is partially located in the inner cavity of the lifting lug 200. On this basis, along the width direction Y perpendicular to the outer side surface of the frame 100, the reinforcement 300 is located between the hanging cylinder 230 and the frame 100, and one end of the reinforcement 300 facing the hanging cylinder 230 may be provided with an avoidance gap 330, where the avoidance gap 330 is used to avoid the hanging cylinder 230. Through the structural design, the utility model can avoid structural interference between the reinforcement 300 and the hanging barrel 230, and can increase the arrangement space of the reinforcement 300 in the inner cavity of the lifting lug 200 on the basis of the structural interference, thereby further enhancing the connection strength between the lifting lug 200 and the frame 100. In some embodiments, the end of the reinforcing rib 300 facing the hanging cylinder 230 may be provided with other avoiding structures, such as but not limited to avoiding holes, etc., but not limited to this embodiment.

Based on the structural design of the lifting lug 200 provided with the hanging cylinder 230, in one embodiment of the present utility model, the end of the reinforcement member 300 facing the hanging cylinder 230 may be connected with the hanging cylinder 230, for example, the reinforcement member 300 may be welded with the portion of the hanging cylinder 230 located in the inner cavity via the avoidance gap 330. Through the structural design, the structural strength of the battery box can be further enhanced.

As shown in fig. 9 and 10, in an embodiment of the present utility model, the reinforcement 300 may include a top plate 301, a bottom plate 302, and side plates, the top plate 301 and the bottom plate 302 being disposed at a top-bottom interval, each of a portion of the top plate 301 and the bottom plate 302 being connected to the top wall 201 and the bottom wall 202 of the lifting lug 200, respectively, and the side plates being connected between edges of the top plate 301 and edges of the bottom plate 302. On this basis, the edge of the top panel 301 may have a top edge 3011 bent toward the bottom panel 302, and the edge of the bottom panel 302 may have a bottom edge 3021 bent toward the top panel 301, the top edge 3011 and the bottom edge 3021 being interconnected to form the side panel. Accordingly, the stiffener 300 may be generally "box-like" in configuration. Through the above structural design, the present utility model can realize that the reinforcement 300 is simultaneously connected with the top wall 201 and the bottom wall 202 of the lifting lug 200, thereby further reinforcing the structural strength of the lifting lug 200. Meanwhile, the present utility model can reduce the weight of the reinforcement 300 and prevent the weight of the battery case from being excessively large.

As shown in fig. 9 and 10, based on the structural design of the stiffener 300 including the top plate 301 and the bottom plate 302, in an embodiment of the present utility model, the top edge 3011 may be located outside the bottom edge 3021, the top edge 3011 may be provided with a third welding hole 30111, and the top edge 3011 and the bottom edge 3021 may be welded at the third welding hole 30111. In some embodiments, when the bottom edge 3021 is located outside the top edge 3011, the third welding hole 30111 may also be formed on the bottom edge 3021, which is not limited to this embodiment. In other words, in various possible embodiments consistent with the design concept of the present utility model, one of the top and bottom flaps 3011 and 3021 is located outside the other, and one of them is provided with the third welding hole 30111.

As shown in fig. 2, 3, 9 and 10, in an embodiment of the present utility model, an end of the reinforcement member 300 facing the frame 100 may be bent to form a flange 340, and the flange 340 is parallel to an outer side surface of the frame 100, whereby the reinforcement member 300 may be connected to the frame 100 via the flange 340. For example, when the reinforcement 300 has the top plate 301 and the bottom plate 302, the top plate 301 and the bottom plate 302 may have the turn-ups 340, respectively, and the turn-ups 340 of the top plate 301 are bent upward, and the turn-ups 340 of the bottom plate 302 are bent downward.

Referring to fig. 11, there is representatively illustrated in fig. 11 a schematic perspective view of a reinforcement 300 of a battery case in another exemplary embodiment which can embody the principles of the present utility model.

The difference is that the stiffener 300 in the embodiment shown in fig. 9 and 10 is of a substantially "box-like" design, and in an embodiment of the present utility model, as shown in fig. 11, the stiffener 300 may be connected to only one wall surface of the lifting lug 200 perpendicular to the lifting direction X, for example, only the bottom wall 202 or the top wall 201 of the lifting lug 200. In this case, the stiffener 300 may have a substantially "plate-like" structure.

Referring to fig. 12, a schematic perspective view of a reinforcement 300 of a battery case in another exemplary embodiment capable of embodying the principles of the present utility model is representatively illustrated in fig. 12.

In an embodiment of the present utility model, as shown in fig. 12, the reinforcement 300 may not have the wing plate 310 and the connection plate 320.

It should be noted herein that the battery boxes shown in the drawings and described in this specification are only a few examples of the wide variety of battery boxes that can employ the principles of the present utility model. It should be clearly understood that the principles of the present utility model are in no way limited to any details or any components of the battery box shown in the drawings or described in this specification.

In summary, the battery box according to the present utility model includes a frame 100, a lifting lug 200, and a reinforcement 300, where the lifting lug 200 has an inner cavity, and the inner cavity has an avoidance opening 240 facing the frame 100. The stiffener 300 passes through the relief opening 240 into the cavity and is connected to the frame 100 and the lifting lug 200, respectively. Through the structural design, the utility model can strengthen the connection strength of the lifting lug 200 and the frame 100 by using the reinforcing piece 300, make up the problem of poor structural strength caused by the inner cavity of the lifting lug 200, and avoid adding an external connection structure and increasing the outer wrapping space of the battery pack.

Based on the above detailed description of several exemplary embodiments of the battery case according to the present utility model, an exemplary embodiment of the battery pack according to the present utility model will be described below.

In one embodiment of the present utility model, the battery pack according to the present utility model includes a battery and a battery case according to the present utility model and described in detail in the above embodiment, the battery being accommodated in the battery case.

It should be noted herein that the battery packs shown in the drawings and described in this specification are only a few examples of the wide variety of battery packs that can employ the principles of the present utility model. It should be clearly understood that the principles of the present utility model are in no way limited to any details or any components of the battery pack shown in the drawings or described in the present specification.

In summary, the battery pack according to the present utility model employs the battery case according to the present utility model. The connecting strength of the lifting lug and the frame can be enhanced by the reinforcing piece, the problem of poor structural strength caused by the fact that the lifting lug is provided with an inner cavity is solved, meanwhile, the additionally arranged external connection structure can be avoided, and the increase of the outer wrapping space of the battery pack is avoided.

Exemplary embodiments of the battery case and the battery pack according to the present utility model are described and/or illustrated in detail above. Embodiments of the utility model are not limited to the specific embodiments described herein, but rather, components and/or steps of each embodiment may be utilized independently and separately from other components and/or steps described herein. Each component and/or each step of one embodiment may also be used in combination with other components and/or steps of other embodiments. When introducing elements/components/etc. that are described and/or illustrated herein, the terms "a," "an," and "the" are intended to mean that there are one or more of the elements/components/etc. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc., in addition to the listed elements/components/etc. Furthermore, the terms "first" and "second" and the like in the claims and in the description are used for descriptive purposes only and not for numerical limitation of their subject matter.

While the utility model has been described in terms of various specific embodiments, those skilled in the art will recognize that the utility model can be practiced with modification within the spirit and scope of the claims.

Claims (14)

1. The utility model provides a battery box, its characterized in that, includes frame, lug and reinforcement, the frame is used for enclosing out the cavity of battery box, the lug set up in the frame is dorsad the surface of cavity, the lug has the inner chamber, the inner chamber has the orientation the opening of dodging of frame, the reinforcement passes dodge the opening gets into the inner chamber and be connected with frame and lug respectively.

2. The battery box of claim 1, wherein the lifting lug has a lifting direction parallel to an outer side surface of the frame, the lifting lug has a wall surface perpendicular to the lifting direction, and a portion of the reinforcement is attached to an inner surface of the wall surface.

3. The battery box of claim 2, wherein the wall surface is provided with a first welding hole, and the reinforcement member is welded to the wall surface at the first welding hole.

4. The battery box according to claim 3, wherein the top wall and the bottom wall of the lifting lug are both the wall surfaces, and the first welding holes are formed in the top wall and the bottom wall.

5. The battery box of claim 2, wherein the wall surface is provided with an escape window exposing a portion of the stiffener connected to the frame.

6. The battery box of claim 5, wherein the wall surface is a bottom wall of the lifting lug, the bottom wall is provided with the avoidance window, at least one side of the reinforcing member is bent to form a wing plate, the end part of the wing plate is bent to form a connecting plate, and the connecting plate is connected to the outer surface of the bottom wall.

7. The battery box of claim 6, wherein the connecting plate is provided with a second welding hole, and the connecting plate and the bottom wall are welded at the second welding hole.

8. The battery box according to claim 1, wherein the width of the lifting lug is 20mm to 150mm in the width direction perpendicular to the outer side surface of the frame.

9. The battery box of claim 1, wherein the lifting lug is provided with a lifting cylinder, the lifting cylinder being partially located in the inner cavity; the reinforcement is positioned between the hanging cylinder and the frame along the width direction perpendicular to the outer side face of the frame, and one end of the reinforcement, which faces the hanging cylinder, is provided with an avoidance structure.

10. The battery box of claim 1, wherein at least a portion of the lifting lug is formed via bending of a sheet material.

11. The battery box of claim 1, wherein the reinforcement comprises a top plate, a bottom plate, and side plates, the top plate and the bottom plate being spaced apart from each other, a portion of the top plate and the bottom plate being connected to the top wall and the bottom wall of the lifting lug, respectively, and the side plates being connected between the top plate edge and the bottom plate edge.

12. The battery box of claim 11, wherein the edge of the top panel has a top flap that is bent toward the bottom panel, the edge of the bottom panel has a bottom flap that is bent toward the top panel, and the top flap and the bottom flap are interconnected to form the side panel.

13. The battery box as claimed in claim 1, wherein the reinforcement is bent toward one end of the frame to form a flange, the flange being parallel to an outer side surface of the frame, and the reinforcement is connected to the frame via the flange.

14. A battery pack comprising a battery and the battery box of any one of claims 1 to 13, the battery being accommodated in the battery box.