CN219917421U - Battery pack - Google Patents

Abstract

The utility model relates to the technical field of batteries, in particular to a battery pack, which comprises a box body, wherein the box body comprises a bottom plate and a plurality of beam structures, two adjacent beam structures are connected in an angle way to form a corner, an R angle structure is arranged on the inner side of the corner of the two adjacent beam structures, the inner side of the R angle structure is an inclined cambered surface, and one end of the cambered surface, which faces the bottom plate, is far away from the corner than one end, which faces away from the bottom plate, of the cambered surface. Through the structural design, the structural strength of the box body at the corner of the two adjacent beam structures can be enhanced by utilizing the R-angle structure, and the structural stability of the battery pack is improved.

Description

Battery pack

Technical Field

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

Background

In the design scheme of current battery package, the box is including being a plurality of beam structure that the angle was arranged, and adjacent beam structure's junction forms the corner structure, and corner structure's structural strength is not enough, leads to the structural stability of battery package relatively poor.

Disclosure of Invention

It is a primary object of the present utility model to overcome at least one of the above-mentioned drawbacks of the prior art and to provide a battery pack having improved structural strength.

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

according to one aspect of the utility model, there is provided a battery pack, comprising a case, wherein the case comprises a bottom plate and a plurality of beam structures, two adjacent beam structures are connected in an angle manner to form a corner, an R-angle structure is arranged on the inner side of the corner of the two adjacent beam structures, the inner side of the R-angle structure is an inclined cambered surface, and one end of the cambered surface, facing the bottom plate, is far away from the corner than one end, facing away from the bottom plate, of the cambered surface.

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

the box body of the battery pack comprises a bottom plate and R-angle structures are arranged on the inner sides of corners of two adjacent beam structures of the plurality of beam structures, the inner sides of the R-angle structures are inclined cambered surfaces, and one end of each cambered surface, which faces the bottom plate, is far away from the corner than one end, which faces away from the bottom plate, of each cambered surface. Through the structural design, the structural strength of the box body at the corner of the two adjacent beam structures can be enhanced by utilizing the R-angle structure, and the structural stability of the battery pack is improved.

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 illustrating a case of a battery pack according to an exemplary embodiment;

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

FIG. 3 is a top view of the case shown in FIG. 1;

fig. 4 is a schematic perspective view of a case of a battery pack according to another exemplary embodiment;

FIG. 5 is an enlarged schematic view of portion B of FIG. 4;

FIG. 6 is a top view of the case shown in FIG. 4;

FIG. 7 is a partial top view of the case shown in FIG. 6 in one manufacturing process;

fig. 8 is a partially enlarged schematic illustration of a battery pack according to still another exemplary embodiment;

FIG. 9 is a top view of FIG. 8;

fig. 10 is a partially enlarged schematic view of a battery pack according to still another exemplary embodiment.

The reference numerals are explained as follows:

100. a case;

110. a beam structure;

111. a corner;

r angle structure;

1201. a straight line edge;

1202. arc edges;

121. an inner side surface;

122. a step structure;

130. a bottom plate;

alpha, arc angle;

l, length;

x. extending 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 case 100 of a battery pack according to the present utility model is representatively illustrated. In this exemplary embodiment, the battery pack according to the present utility model is described by taking an in-vehicle battery as an example. 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 devices, and such changes remain within the principles of the battery packs presented herein.

As shown in fig. 1, in an embodiment of the present utility model, a battery pack according to the present utility model includes a case 100. Referring to fig. 2 and 3 in combination, an enlarged schematic view of portion a of fig. 1 is representatively illustrated in fig. 2; fig. 3 representatively shows a top view of the housing 100 illustrated in fig. 1, in which an enlarged structure of a partial region is specifically illustrated. The structure, connection manner and functional relationship of the main components of the battery pack according to the present utility model will be described in detail with reference to the above drawings.

As shown in fig. 1 to 3, in an embodiment of the present utility model, the case 100 includes a base plate 130 and a plurality of beam structures 110, and two adjacent beam structures 110 are connected at an angle to form a corner 111, i.e., the two adjacent beam structures have an included angle other than 0 and 180 °. On this basis, the inner sides of the corners 111 of the two adjacent beam structures 110 are provided with R-angle structures 120, and the inner sides 121 of the R-angle structures 120 are inclined cambered surfaces, and the cambered surfaces are far away from the corners toward one end of the bottom plate 130 than the end of the cambered surfaces facing away from the bottom plate 130, in other words, the inner sides 121 of the R-angle structures 120 are gradually inclined toward the inner sides of the box body 100 (i.e., gradually far away from the corners 111) in the direction toward the bottom plate 130, that is, the cambered surfaces of the R-angle structures are designed with a gradient structure. Through the structural design, the structural strength of the box body 100 at the corners 111 of the two adjacent beam structures 110 can be enhanced by utilizing the R-angle structure 120, and the structural stability of the battery pack is improved.

As shown in fig. 2, in one embodiment of the utility model, the end of the R-angle structure 120 remote from the floor may be located at the end of the corner 111 remote from the floor, and the end of the R-angle structure 120 facing the floor may be located at the end of the corner 111 facing the floor. Through the structural design, the utility model can further optimize the reinforcing effect of the R-angle structure 120 on the structural strength of the corner 111 of the box body 100. In particular, when the case 100 includes a bottom plate and the beam structure 110 is disposed on the bottom plate, the R-angle structure 120 can also increase the connection area of the beam structure 110 and the bottom plate, further improving the connection strength of the beam structure and the bottom plate.

As shown in fig. 3, in an embodiment of the present utility model, the orthographic projection pattern of the R-angle structure 120 on the base plate has two straight sides 1201 and an arc side 1202, the two straight sides 1201 are respectively connected to two adjacent beam structures 110, the arc side 1202 corresponds to the inner side 121 of the R-angle structure 120, and two ends of the arc side 1202 are respectively connected to one ends of the two straight sides 1201 toward the base plate 130. On this basis, the curved side 1202 may be circular arc-shaped. Through the structural design, the stress of the R-angle structure 120 can be further optimized, so that the reinforcing effect of the R-angle structure 120 on the structural strength of the corner 111 of the box body 100 is further optimized.

As shown in fig. 3, based on the structural design that the arc side 1202 of the orthographic projection pattern of the R-angle structure 120 on the base plate is in the shape of a circular arc, in an embodiment of the present utility model, the arc corresponding to the arc side 1202, that is, the angle α of the corresponding arc angle of the arc side 1202 may be 30 ° to 150 °, for example 30 °, 45 °, 60 °, 120 °, 135 °, 150 °, etc. Through the structural design, the arc edge 1202 can be prevented from being too small in corresponding radian, so that the arc edge 1202 is approaching to be linear, and meanwhile, the processing difficulty caused by too large curvature of the inner side surface 121 of the R-angle structure 120 due to too large corresponding radian of the arc edge 1202 can be avoided. In some embodiments, the arc edge 1202 may have an arc of less than 30 ° or greater than 150 °, such as 29 °, 151 °, etc., but not limited to this embodiment.

As shown in fig. 3, based on the structural design that the angle α of the corresponding arc angle of the arc side 1202 of the orthographic projection pattern of the R-angle structure 120 on the base plate is 30 ° to 150 °, in an embodiment of the present utility model, the corresponding arc of the arc side 1202 may be further 90 °, that is, the arc side 1202 may be a quarter of an arc.

As shown in fig. 3, the orthographic pattern of the R-angle structure 120 on the base plate has a structural design with two straight edges 1201 connected, and in one embodiment of the present utility model, two adjacent beam structures 110 are connected relatively vertically, and two straight edges 1201 of the orthographic pattern of the R-angle structure 120 on the base plate are vertical.

As shown in fig. 3, based on the structural design that the orthographic projection pattern of the R-angle structure 120 on the base plate has two connected straight sides 1201, in an embodiment of the present utility model, the lengths of the two straight sides 1201 may be equal, in other words, the orthographic projection pattern of the R-angle structure 120 on the base plate may be similar to an isosceles right triangle, and the two straight sides 1201 are two right sides corresponding to the isosceles right triangle, and the arc side 1202 is one side corresponding to the hypotenuse of the isosceles right triangle. Through the structural design, the stress of the R-angle structure 120 can be further optimized, so that the reinforcing effect of the R-angle structure 120 on the structural strength of the corner 111 of the box body 100 is further optimized.

Referring to fig. 4 to 7, a schematic perspective view of a case 100 of a battery pack in another exemplary embodiment capable of embodying the principles of the present utility model is representatively illustrated in fig. 4; an enlarged schematic view of portion B of fig. 4 is representatively illustrated in fig. 5, with a partial area enlarged; fig. 6 representatively illustrates a top view of the case 100 illustrated in fig. 4, with a partial area enlarged; a schematic process diagram of the enlarged portion of fig. 6 in one manufacturing step of the battery pack is representatively illustrated in fig. 7.

As shown in fig. 4 to 6, in an embodiment of the present utility model, at least one side of the R-angle structures 120 may have a stepped structure 122, respectively. Preferably, both sides of the R-angle structure 120 may have a stepped structure 122, respectively. In which, as shown in fig. 7, the above-described step structure 122 may be formed by removing both side portions of the R-angle structure 120 through a cutting process such as milling. As shown in fig. 5, the step surface of the step structure 122 is a right triangle, one right-angle side of the right triangle is connected to the corresponding beam structure 110, the other right-angle side is connected to the bottom plate of the box 100, and the hypotenuse of the right triangle corresponds to the inner side surface 121 of the R-angle structure 120. Through the structural design, the utility model can reduce the space occupied by the R-angle structure 120 in the extending direction X of the beam structure 110, thereby avoiding the structural interference between the R-angle structure 120 and the battery accommodated in the box body 100, and being beneficial to improving the space utilization rate and the energy density of the battery pack.

As shown in fig. 3 or 6, in some embodiments of the present utility model, the maximum length L of the R-angle structure 120 in the extending direction X of the beam structure 110 may be 10mm to 40mm, for example, 10mm, 15nn, 20mm, 30mm, 40mm, etc. Through the structural design, the utility model can avoid the problem that the excessive size of the R-angle structure 120 occupies excessive space to influence the battery arrangement and cause space waste, and can also avoid the problem that the effect of optimizing the structural strength of the battery pack is not obvious due to the undersize of the R-angle structure 120. In some embodiments, the maximum length L of the R-angle structure 120 may be less than 10mm, or may be greater than 40mm, such as 9.9mm, 40.5mm, etc., and is not limited to this embodiment.

As shown in fig. 1 or 4, in some embodiments of the utility model, the plurality of beam structures 110 of the case 100 may include a plurality of side beams that enclose the cavity of the case 100.

In another embodiment of the present utility model, not shown, the plurality of beam structures 110 may also include a plurality of side beams and an inner beam, the side beams enclose the cavity of the case 100, the inner beam is disposed in the cavity and connected to the side beams, the inner beam may be a cross beam or a longitudinal beam of the case 100 for dividing the battery compartment of the case 100 into a plurality of chambers, the inner beam may also be a dividing beam of the case 100 for dividing the battery compartment and the electrical compartment of the case 100, and the present utility model is not limited thereto.

Referring to fig. 8 and 9, a partial enlarged schematic view of a case 100 of a battery pack in another exemplary embodiment capable of embodying the principles of the present utility model is representatively illustrated in fig. 8; the top view of fig. 8 is representatively illustrated in fig. 9.

As shown in fig. 8 and 9, in one embodiment of the present utility model, the orthographic projection pattern of the corners of two adjacent beam structures 110 on the bottom plate 130 may be an arc. On this basis, two straight sides 1201 of the orthographic projection of the R-angle structure 120 on the base plate 130 may be respectively connected to two ends of the arc at the end facing away from the base plate 130. In some embodiments, such as the embodiments shown in fig. 1-7, the orthographic projection pattern of the corners of two adjacent beam structures 110 on the bottom plate 130 may also be a sharp corner (such as, but not limited to, the right angle shown in the drawings). On this basis, the two straight sides 1201 of the orthographic pattern of the R-angle structure 120 on the base plate 130 may be connected together at the vertex of the sharp corner at the end facing away from the base plate 130.

Referring to fig. 10, there is representatively illustrated in fig. 10 a partially enlarged schematic view of a case 100 of a battery pack capable of embodying the principles of the present utility model in another exemplary embodiment, with a partial area enlarged and displayed.

Unlike the embodiment shown in fig. 5, which adopts a structural design in which both sides of the lower portion of the R-angle structure have stepped structures, respectively, as shown in fig. 10, in an embodiment of the present utility model, both sides of the entire R-angle structure may have stepped structures, i.e., the stepped structures may be disposed at all of both sides of the R-angle structure in a direction perpendicular to the bottom plate 130.

In one embodiment of the present utility model, the base plate 130 and the plurality of beam structures 110 may be a unitary structure. For example, the bottom plate 130 and the beam structure 110 may be implemented by an integral die-casting process, and by adopting the above design, the utility model can utilize the process characteristics of the integral die-casting process to make the formation of the R-angle structure at the corner of the adjacent beam structure 110 more convenient.

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 of the details of the battery pack or any of the components of the battery pack shown in the drawings or described in the present specification.

In summary, the case 100 of the battery pack according to the present utility model includes the bottom plate 130 and the R-angle structures 120 disposed at the inner sides of the corners 111 of two adjacent beam structures 110 of the plurality of beam structures 110, wherein the inner sides 121 of the R-angle structures 120 gradually incline toward the inner side of the case 100 in the top-to-bottom direction, so that the inner sides 121 of the R-angle structures 120 are inclined cambered surfaces. Through the structural design, the structural strength of the box body 100 at the corners 111 of the two adjacent beam structures 110 can be enhanced by utilizing the R-angle structure 120, and the structural stability of the battery pack is improved.

Exemplary embodiments of 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 (11)

1. The utility model provides a battery package, its characterized in that, includes the box, the box includes bottom plate and a plurality of beam structure, two adjacent beam structure is connected and forms the turning with the angle, two adjacent beam structure's the inboard in corner is provided with R angle structure, the cambered surface of slope is personally submitted to the inboard of R angle structure, the cambered surface orientation the one end of bottom plate is more the cambered surface is facing away from the one end of bottom plate is kept away from to the cambered surface.

2. The battery pack of claim 1, wherein an end of the R-angle structure remote from the base plate is located at an end of the corner remote from the base plate, and an end of the R-angle structure facing the base plate is located at an end of the corner facing the base plate.

3. The battery pack according to claim 1, wherein the orthographic projection pattern of the R-angle structure on the bottom plate has two straight sides and one arc side, the two straight sides are respectively connected to two adjacent beam structures, the arc side corresponds to the inner side surface of the R-angle structure, two ends of the arc side are respectively connected to one ends of the two straight sides facing the bottom plate, and the arc side is in a circular arc shape.

4. The battery pack of claim 3, wherein the arcuate edge corresponds to an arc of 30 ° to 150 °.

5. The battery pack of claim 4, wherein the arcuate edge corresponds to an arc of 90 °.

6. A battery pack according to claim 3, wherein adjacent two of said beam structures are connected relatively vertically and two of said straight edges are perpendicular.

7. A battery pack according to claim 3, wherein the lengths of the two straight sides are equal.

8. A battery pack according to claim 3, wherein:

orthographic projection patterns of corners of two adjacent beam structures on the bottom plate are sharp angles; wherein, one end of the two straight sides facing away from the bottom plate is commonly connected with the vertex of the sharp corner; or alternatively

Orthographic projection patterns of corners of two adjacent beam structures on the bottom plate are arc lines; and one ends of the two straight sides, which are opposite to the bottom plate, are respectively connected with two ends of the arc line.

9. The battery pack of claim 1, wherein at least one side of the R-angle structure has a stepped structure.

10. The battery pack according to claim 1, wherein the maximum length of the R-angle structure in the extending direction of the beam structure is 10mm to 40mm.

11. The battery pack according to any one of claims 1 to 10, wherein:

the plurality of beam structures comprise a plurality of side beams, and the side beams enclose a cavity of the box body; and/or

The plurality of beam structures comprise a plurality of side beams and an inner beam, the side beams enclose a cavity of the box body, and the inner beam is arranged in the cavity and connected with the side beams.