CN219759827U - Battery pack - Google Patents

Abstract

The utility model relates to the technical field of batteries, in particular to a battery pack, which comprises a frame structure and a battery pack, wherein the frame structure is used for fixing the battery pack, and is provided with a plurality of surfaces, including a first surface facing the battery pack; at least a part of the first surface is abutted against the battery pack, and the surface roughness of the part of the first surface abutted against the battery pack is unequal to the surface roughness of at least a part of other surfaces of the frame structure. Through the structural design, the utility model can realize higher adaptation degree of the surface roughness of the first surface abutting against the battery pack and the surface roughness of the battery pack, is beneficial to improving the friction between the first surface and the battery pack, and accordingly improves the fixing effect of the frame structure on the battery pack, thereby optimizing the battery performance of the battery pack.

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 the existing battery pack, the surface roughness of each surface of the fixing structure of the battery pack for fixing the battery pack is the same, however, the same surface roughness of different surfaces (such as the surface facing the battery pack and the surface facing away from the battery pack) of the fixing structure can cause poor fixing effect on the battery pack, and influence the battery performance.

Disclosure of Invention

It is therefore 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 with improved battery fixing.

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

according to one aspect of the present utility model, there is provided a battery pack including a frame structure for fixing the battery pack, the frame structure having a plurality of surfaces including a first surface facing the battery pack, and a battery pack; at least a part of the first surface is abutted against the battery pack, and the surface roughness of the part of the first surface abutted against the battery pack is unequal to the surface roughness of at least a part of other surfaces of the frame structure.

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

the battery pack comprises a frame structure and a battery pack, wherein a plurality of surfaces of the frame structure comprise a first surface facing the battery pack, at least one part of the first surface is abutted against the battery pack, and the surface roughness of the part of the first surface abutted against the battery pack is unequal to the surface roughness of at least one part of other surfaces of the frame structure. Through the structural design, the utility model can realize higher adaptation degree of the surface roughness of the first surface abutting against the battery pack and the surface roughness of the battery pack, is beneficial to improving the friction between the first surface and the battery pack, and accordingly improves the fixing effect of the frame structure on the battery pack, thereby optimizing the battery performance of the battery pack.

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 pack according to an exemplary embodiment;

fig. 2 is a partial cross-sectional view of the battery pack shown in fig. 1;

FIG. 3 is a process schematic of the frame structure shown in FIG. 2 in one manufacturing process;

fig. 4 is a partial cross-sectional view of a battery pack according to another exemplary embodiment;

FIG. 5 is a process schematic of the frame structure shown in FIG. 4 in one manufacturing process;

fig. 6 is a schematic perspective view of a battery pack according to still another exemplary embodiment;

fig. 7 is a schematic perspective view of a battery pack according to still another exemplary embodiment;

fig. 8 is a partial sectional view of the battery pack shown in fig. 7.

The reference numerals are explained as follows:

100. a case;

101. a frame;

102. an inner beam;

103. an end plate;

110. a frame structure;

111. a first surface;

1111. a first portion;

1112. a second portion;

112. a second surface;

200. a battery pack;

alpha, included angle;

H1. height of the steel plate;

H2. height of the steel plate.

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 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 frame structure 110 and a battery pack 200, wherein the frame structure 110 is used for fixing the battery pack 200. Referring to fig. 2 and 3 in combination, a partial cross-sectional view of the battery pack is representatively illustrated in fig. 2, wherein the cross-sectional structure of the frame structure 110 is specifically illustrated in a contact position with the battery pack 200; a process schematic of the frame structure 110 shown in fig. 2 in one manufacturing process is representatively illustrated in fig. 3. 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 and 2, in one embodiment of the present utility model, the frame structure 110 has a plurality of surfaces, such as a top surface, a bottom surface, side surfaces, and the like. These surfaces include a first surface 111 (such as, but not limited to, one of the sides shown in the figures) facing the battery pack 200, and a portion of the first surface 111 (such as the first portion 1111 shown in the figures) abuts against the battery pack 200, for example, a portion of the first surface 111 may abut against a battery of the battery pack 200, and for example, a portion of the first surface 111 may abut against other structures such as an end insulating plate of the battery pack. On this basis, the surface roughness of the portion of the first surface 111 that abuts against the battery pack 200 (i.e., the first portion 1111) is not equal to the surface roughness of at least a portion of the other surfaces (e.g., the top surface and the other side surface shown in the drawings, etc.) of the frame structure 110. Through the structural design, the utility model can realize higher adaptation degree of the surface roughness of the first surface 111 abutting against the battery pack 200 and the surface roughness of the battery pack 200, is beneficial to improving the friction force between the first surface 111 and the battery pack 200, and accordingly improves the fixing effect of the frame structure 110 on the battery pack 200, thereby optimizing the battery performance of the battery pack.

As shown in fig. 2, in an embodiment of the present utility model, the first surface 111 of the frame structure 110 may have a first portion 1111 and a second portion 1112, an included angle α between the first portion 1111 and the second portion 1112 may be greater than 90 ° and less than 180 °, and the first portion 1111 abuts against the battery pack 200, that is, the first portion 1111 is a portion where the first surface 111 abuts against the battery pack 200.

As shown in fig. 2, based on the structural design of the first surface 111 of the frame structure 110 having the first portion 1111 and the second portion 1112, in an embodiment of the present utility model, the first portion 1111 may be a vertical surface and the second portion 1112 may be a slope.

As shown in fig. 2, based on the structural design that the first portion 1111 and the second portion 1112 of the first surface 111 have an included angle α greater than 90 ° and less than 180 °, in an embodiment of the present utility model, the included angle α between the first portion 1111 and the second portion 1112 may be further preferably 120 ° to 179 °, such as 120 °, 125 °, 130 °, 135 °, 140 °, 145 °, 150 °, 155 °, 160 °, 165 °, 170 °, 175 °, 176 °, 177 °, 178 °, 179 °, and the like. More preferably, the angle α between the first portion 1111 and the second portion 1112 may be 175 ° to 178.5 °. When the frame structure 110 is molded via integral casting, in such molding process, the side surface of the vertically arranged frame structure 110 can be formed into a slope-like structure, whereby the above-described first and second portions can be formed via further processing of the side surface, thereby making the slope the above-described first surface 111 of the frame structure 110. On the basis, by utilizing the reasonable selection of the range of the included angle alpha, the structural design of the utility model is more close to the corresponding angle range of the draft angle of the molding process. Therefore, the utility model can avoid the situation that the included angle alpha is too small to deviate from the corresponding angle range of the drawing angle of the molding process, and can avoid the situation that the second part is similar to the vertical surface due to the too large included angle alpha. In addition, the present utility model can make the box insertion of the battery pack 200 more convenient by using the reasonable selection of the range of the included angle α.

Based on the structural design of the first surface 111 of the frame structure 110 having the first portion 1111 and the second portion 1112, in an embodiment of the present utility model, the surface roughness of the first portion 1111 and the surface roughness of the second portion 1112 may not be equal. With the above structural design, since the first portion 1111 is a portion of the clamping structure where the first surface 111 abuts against the battery pack 200, the present utility model can enable the second portion 1112 to have a more flexible design without having to have the same surface roughness as the first portion 1111 on the basis of ensuring that the surface roughness of the first portion 1111 matches the surface roughness of the battery pack 200.

Based on the structural design that the surface roughness of the first portion 1111 is not equal to the surface roughness of the second portion 1112, in an embodiment of the present utility model, the surface roughness of the first portion 1111 may be greater than the surface roughness of the second portion 1112. Accordingly, as shown in fig. 3, the frame structure 110 may be formed by integral casting, and in this forming process, a side surface of the vertically arranged frame structure 110 may be formed into a slant structure, so that a part of a vertical surface may be formed by cutting the side surface, that is, the first portion 1111 of the first surface 111 may be formed, and a portion of the side surface that is not cut may remain as a slant structure, that is, the second portion 1112 of the first surface 111 may be formed. On this basis, since the surface roughness of the cutting surface (i.e., the vertical surface, i.e., the first portion 1111) formed during the cutting process is larger than the original surface roughness of the surface not being cut, the above-mentioned structural design in which the surface roughness of the first portion 1111 is larger than the surface roughness of the second portion 1112 can be realized. Through the structural design, the utility model can facilitate the molding of the frame structure 110, and simultaneously ensure the fixing effect of the frame structure 110 on the battery pack 200.

Referring to fig. 4 and 5, a partial cross-sectional view of a battery pack capable of embodying the principles of the present utility model is representatively illustrated in fig. 4; a process schematic of the frame structure 110 shown in fig. 4 in one manufacturing process is representatively illustrated in fig. 5.

Unlike the embodiment shown in fig. 2, which employs a structural design in which the first surface 111 has a first portion 1111 and a second portion 1112 that are disposed obliquely with respect to each other, as shown in fig. 4, in an embodiment of the present utility model, the first surface 111 may be entirely vertical. On this basis, the surface roughness of the first surface 111 is not equal to the surface roughness of at least a portion of the other surfaces of the frame structure 110. In other words, in various possible exemplary embodiments consistent with the design concept of the present utility model in connection with the embodiments respectively illustrated in fig. 2 and 4, the surface roughness of the portion of the first surface 111 abutting against the battery pack 200 is not equal to the surface roughness of at least a portion of the other surface of the frame structure 110.

Accordingly, as shown in fig. 5, when the frame structure 110 is formed by integral casting, the inclined surface portion of the inclined surface of the frame structure 110 can be completely removed by integrally cutting the inclined surface portion, that is, the first surface 111 having the vertical surface as a whole. On this basis, since the surface roughness of the cutting face (i.e., the first surface 111) formed during the cutting process is larger than the original surface roughness of the surface that is not cut, a structural design in which the surface roughness of the first surface 111 is larger than the surface roughness of the remaining surfaces of the frame structure 110 can be realized.

As shown in fig. 2 or 4, in some embodiments of the present utility model, other surfaces of the frame structure 110 may include a second surface 112, i.e., the other side shown in the drawings, i.e., the side facing away from the battery pack 200. On this basis, the surface roughness of the portion of the first surface 111 of the frame structure 110 abutting the battery pack 200 (e.g., the surface roughness of the first portion 1111 in fig. 2, or the surface roughness of the first surface 111 as in fig. 4) and the surface roughness of the second surface 112 may not be equal.

As shown in fig. 2 or 4, in some embodiments of the present utility model, the battery pack according to the present utility model includes a base plate on which the frame structure 110 and the battery pack 200 are respectively disposed. On the basis of this, the ratio of the height H1 of the portion where the first surface 111 abuts against the battery pack 200 in the height direction in the height H2 of the battery pack 200 may be 0.5 to 1, for example, 0.5, 0.6, 0.7, 0.8, 0.9, 1, or the like. Through the above structural design, the utility model can avoid the influence of the too small height ratio on the fixing effect of the frame structure 110 on the battery pack 200, and can avoid the waste of space due to the too large overall height of the frame structure 110 caused by the too large height ratio.

Specifically, taking fig. 2 as an example, the portion of the first surface 111 abutting against the battery pack 200 is the first portion 1111, where the height H1 of the first portion 1111 may be smaller than the height H2 of the battery pack 200, that is, the above-mentioned duty ratio is smaller than 1, the height H1 of the first portion 1111 may also be equal to the height H2 of the battery pack 200, that is, the above-mentioned duty ratio is equal to 1, and of course, the height H1 of the first portion 1111 may also be larger than the height H2 of the battery pack 200, that is, the above-mentioned duty ratio is still equal to 1, because the portion of the frame structure 110 abutting against the battery pack 200 at this time is not the whole of the first portion 1111 but a part of the first portion 1111 is not limited to the present embodiment.

Taking fig. 4 as an example, the portion of the first surface 111 abutting against the battery pack 200 is a portion of the first surface 111 that is entirely vertical. Since the overall height of the frame structure 110 is generally greater than or equal to the height of the battery pack 200, the ratio of the height H1 of the portion of the first surface 111 abutting against the battery pack 200 to the height H2 of the battery pack 200 is 1. Of course, in some embodiments, when the overall height of the frame structure 110 is lower than the height of the battery pack 200, even if the first surface 111 is designed to be an overall vertical surface, the ratio of the height H1 of the portion of the first surface 111 abutting against the battery pack 200 (i.e., the height of the first surface 111) to the height H2 of the battery pack 200 may be less than 1, which is not limited to the present embodiment.

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, where the case 100 includes a frame 101, and the frame 101 encloses a cavity of the case 100. Accordingly, the frame structure 110 may be the frame 101.

Referring to fig. 6, a schematic perspective view of a battery pack capable of embodying the principles of the present utility model in a further exemplary embodiment is representatively illustrated in fig. 6 with a portion of the battery pack 200 omitted and an exploded view of a portion of the battery pack 200.

As shown in fig. 6, in an embodiment of the present utility model, a battery pack according to the present utility model includes a case 100, and an internal beam 102 is disposed in a cavity of the case 100, where the internal beam 102 divides the cavity into a plurality of chambers (e.g., into a plurality of battery compartments, and further into a battery compartment, an electrical compartment, etc.). On this basis, the frame structure 110 may be the inner beam 102. It should be noted that, when the internal beam 102 is a beam structure that separates the battery compartment from the electrical compartment, a side surface of the internal beam 102 facing the battery compartment may be the first side surface, and when the internal beam 102 is a beam structure that separates the battery compartments, both side surfaces of the internal beam 102 may be the first side surface.

Referring to fig. 7 and 8, a schematic perspective view of a battery pack embodying principles of the present utility model in a further exemplary embodiment is representatively illustrated in fig. 7, wherein battery pack 200 and end plate 103 are illustrated in exploded view; a partial cross-sectional view of a portion of the structure shown in fig. 7 is representatively illustrated in fig. 8.

As shown in fig. 7 and 8, in an embodiment of the present utility model, the battery pack according to the present utility model includes end plates 103, and the end plates 103 are disposed at the ends of the battery pack 200 in the battery arrangement direction. On this basis, the frame structure 110 may be the end plate 103.

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 battery pack according to the present utility model includes the frame structure 110 and the battery pack 200, wherein the plurality of surfaces of the frame structure 110 include the first surface 111 facing the battery pack 200, at least a portion of the first surface 111 abuts against the battery pack 200, and the surface roughness of the portion of the first surface 111 abutting against the battery pack 200 is not equal to the surface roughness of at least a portion of the other surfaces of the frame structure 110. Through the structural design, the utility model can realize higher adaptation degree of the surface roughness of the first surface 111 abutting against the battery pack 200 and the surface roughness of the battery pack 200, is beneficial to improving the friction force between the first surface 111 and the battery pack 200, and accordingly improves the fixing effect of the frame structure 110 on the battery pack 200, thereby optimizing the battery performance of the battery pack.

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. A battery pack comprising a frame structure for securing the battery pack and a battery pack, the frame structure having a plurality of surfaces including a first surface facing the battery pack; at least a part of the first surface is abutted against the battery pack, and the surface roughness of the part of the first surface abutted against the battery pack is unequal to the surface roughness of at least a part of other surfaces of the frame structure.

2. The battery pack of claim 1, wherein the first surface has a first portion and a second portion, and wherein the first portion and the second portion have an included angle therebetween that is greater than 90 ° and less than 180 °, the first portion abutting the battery pack.

3. The battery pack of claim 2, wherein the first portion is a vertical surface and the second portion is a beveled surface.

4. The battery pack of claim 2, wherein the angle between the first portion and the second portion is 120 ° to 179 °.

5. The battery pack of claim 2, wherein the surface roughness of the first portion is not equal to the surface roughness of the second portion.

6. The battery pack of claim 5, wherein the surface roughness of the first portion is greater than the surface roughness of the second portion.

7. The battery pack of claim 1, wherein the first surface is generally vertical; wherein the surface roughness of the first surface is not equal to the surface roughness of at least a portion of the other surfaces of the frame structure.

8. The battery pack of claim 1, wherein the other surface of the frame structure includes a second surface facing away from the battery pack; wherein, the surface roughness of the part of the first surface abutting against the battery pack is not equal to the surface roughness of the second surface.

9. The battery pack of claim 4, wherein the angle between the first portion and the second portion is 175 ° to 178.5 °.

10. The battery pack according to any one of claims 1 to 9, wherein the battery pack includes a bottom plate, and the frame structure and the battery pack are respectively provided on the bottom plate; wherein, along the height direction, the first surface is abutted against the height of the part of the battery pack, and the duty ratio of the height of the battery pack is 0.5-1.

11. The battery pack according to any one of claims 1 to 9, wherein:

the battery pack comprises a box body, wherein the box body comprises a frame, the frame encloses a cavity of the box body, and the frame structure is the frame; and/or

The battery pack comprises a box body, wherein an inner beam is arranged in a cavity of the box body, the cavity is divided into a plurality of chambers by the inner beam, and the frame structure is the inner beam; and/or

The battery pack comprises an end plate, the end plate is arranged at the end part of the battery pack along the arrangement direction of the batteries, and the frame structure is the end plate.