CN219873779U

CN219873779U - battery pack

Info

Publication number: CN219873779U
Application number: CN202321103443.4U
Authority: CN
Inventors: 曹新成; 施金龙; 葛顺路; 赵璐涵
Original assignee: China Innovation Aviation Technology Group Co ltd
Current assignee: China Innovation Aviation Technology Group Co ltd
Priority date: 2023-05-09
Filing date: 2023-05-09
Publication date: 2023-10-20
Anticipated expiration: 2033-05-09

Abstract

The utility model relates to the technical field of batteries, in particular to a battery pack, which comprises a box body and a box cover, wherein the box body comprises a frame, the frame is provided with a body and a top connecting plate, the top connecting plate is connected to the top surface of the body, the plane of the body and the plane of the top connecting plate are arranged at an angle, the top connecting plate protrudes out of the body, the body and the top connecting plate jointly form an accommodating space, and the box body is connected to the top surface of the top connecting plate through a first connecting piece; wherein, the bottom surface of top connecting plate is provided with first boss, and first connecting piece part stretches into first boss and with first boss fixed connection, first boss is on a parallel with top connecting plate place plane to the body extension and be connected to the body, and first boss holds in accommodation space.

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, case lid and bottom plate are connected with the frame of box through the connecting piece respectively, because the connection fixed area of connecting piece is limited, lead to joint strength not good, and the battery package is jolting under the operating mode in addition, and case lid and bottom can produce the vibration with respect to the frame to cause the junction of frame to produce deformation and tear even.

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 having a high strength of connection between the frame of the case and the cover and the bottom plate.

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, wherein the battery pack comprises a case and a case cover, the case comprises a frame, the frame has a body and a top connection plate, the top connection plate is connected to the top surface of the body, the plane of the body and the plane of the top connection plate are arranged at an angle, the top connection plate protrudes out of the body, the body and the top connection plate together form an accommodating space, and the case is connected to the top surface of the top connection plate via a first connection piece; the bottom surface of the top connecting plate is provided with a first boss, the first connecting piece part stretches into the first boss and is fixedly connected with the first boss, the first boss extends to the body and is connected to the body in parallel with the plane where the top connecting plate is located, and the first boss is accommodated in the accommodating space.

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 box body and a box cover, wherein the frame of the box body is provided with a body and a top connecting plate, the top connecting plate extends out of the body to form an accommodating space, the box cover is connected to the top connecting plate through a connecting piece, a boss is arranged at the bottom of the top connecting plate, the boss is accommodated in the accommodating space, extends to the body parallel to the plane of the top connecting plate and is connected to the body, and the connecting piece extends into the boss and is fixedly connected with the boss. Through the structural design, the fixed connection area of the first connecting piece can be improved by utilizing the first boss, so that the connection strength of the box cover and the frame is improved. In addition, as the boss extends and is connected to the body of the frame, the structure strength of the boss can be enhanced, deformation and even tearing of the connecting position under the vibration working condition are avoided, 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 partial schematic view of the case shown in FIG. 1;

FIG. 3 is an enlarged partial schematic view of the case of FIG. 1 from a bottom view;

FIG. 4 is an enlarged partial schematic view of the case of FIG. 1 from a side view;

fig. 5 is a partially enlarged schematic view of a case of a battery pack according to another exemplary embodiment;

FIG. 6 is a side view of FIG. 5;

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

FIG. 8 is a side view of FIG. 7;

fig. 9 is a partially enlarged schematic view of a case of a battery pack according to still another exemplary embodiment;

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

The reference numerals are explained as follows:

100. a frame;

110. a body;

120. a top connection plate;

121. a first boss;

122. a first mounting hole;

130. a bottom connecting plate;

131. a second boss;

1311. an arc-shaped transition structure;

132. a second mounting hole;

140. an accommodation space;

150. an integral boss;

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 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 and a case cover. Referring to fig. 2-4 in conjunction, a partially enlarged schematic view of the tank is representatively illustrated in fig. 2; a partially enlarged schematic view of the case in a bottom view is representatively illustrated in fig. 3; a partially enlarged schematic view of the case from a side view is representatively 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 includes a frame 100, the frame 100 includes a body 110 and a top connecting plate 120, the top connecting plate 120 is connected to a top surface of the body 110, and a plane of the body 110 and a plane of the top connecting plate 120 are disposed at an angle, i.e. the plane of the body 110 is not parallel to the plane of the top connecting plate 120, such as the plane of the drawings is relatively perpendicular. The top connection plate 120 protrudes outside the body 110, which means that the side of the body 110 facing away from the inner cavity of the case, that is, the side of the body 110 facing away from the battery, and accordingly, the body 110 and the portion of the top connection plate 120 protruding outside the body 110 together form an accommodating space 140, and the opening of the accommodating space 140 faces the outside of the frame 100. And, the case is connected to the top surface of the top connection plate 120 via a first connection member. On this basis, the bottom surface of the top connection plate 120 is provided with a first boss 121, and the first connector part extends into the first boss 121 and is fixedly connected with the first boss 121, the first boss 121 is accommodated in the accommodating space 140, and the first boss 121 extends to the body 110 parallel to the plane of the top connection plate 120 and is connected to the body 110. Through the structural design, the first boss 121 can be utilized to improve the fixed connection area of the first connecting piece, so that the connection strength of the box cover and the frame 100 is improved. In addition, since the boss extends and is connected to the body 110 of the frame 100, the structural strength of the boss can be enhanced, deformation or even tearing of the connection position under the vibration working condition is avoided, and the structural stability of the battery pack is improved.

As shown in fig. 1 to 3, in an embodiment of the present utility model, the battery pack further includes a bottom plate. On this basis, the frame 100 may further have a bottom connecting plate 130, where the bottom connecting plate 130 is connected to the bottom surface of the body 110, and the plane of the body 110 and the plane of the bottom connecting plate 130 are disposed at an angle, that is, the plane of the body 110 and the plane of the bottom connecting plate 130 are not parallel, for example, relatively perpendicular as shown in the drawings. The bottom connecting plate 130 protrudes outside the body 110, which means that the side of the body 110 facing away from the cavity of the case, that is, the side of the body 110 facing away from the battery, and accordingly, the parts of the body 110 and the top connecting plate 120 protruding from the body 110 and the part of the bottom connecting plate 130 protruding from the body 110 together form an accommodating space 140, the accommodating space 140 is substantially in the shape of a groove, and the notch of the groove faces the outside of the frame 100. The case is connected to the bottom surface of the bottom connection plate 130 via a second connection member. On this basis, the top surface of the bottom connecting plate 130 is provided with a second boss 131, the second connecting member portion extends into the second boss 131 and is fixedly connected with the second boss 131, the second boss 131 is accommodated in the accommodating space 140, and the second boss 131 extends to the body 110 parallel to the plane of the bottom connecting plate 130 and is connected to the body 110. Through the structural design, the fixing connection area of the second connecting piece can be increased by using the second boss 131, so that the connection strength of the bottom plate and the frame 100 is increased. In addition, since the boss extends and is connected to the body 110 of the frame 100, the structural strength of the boss can be enhanced, deformation or even tearing of the connection position under the vibration working condition is avoided, and the structural stability of the battery pack is improved.

As shown in fig. 4, in an embodiment of the present utility model, the first bosses 121 and the second bosses 131 may be arranged offset along the extending direction X of the frame 100, in other words, the front projection of the first bosses 121 and the front projection of the second bosses 131 do not overlap entirely or do not overlap entirely on the bottom surface of the top connection plate 120 or the top surface of the bottom connection plate 130. Through the structural design, the first boss 121 and the second boss 131 can be prevented from being positioned at corresponding positions in the extending direction X, so that the position of the frame 100 is prevented from being influenced by stress when the case cover and the bottom plate are respectively connected, and the structural stability of the case body is further improved.

Referring to fig. 5 and 6, a partially enlarged schematic illustration of a case of a battery pack in another exemplary embodiment capable of embodying principles of the present utility model is representatively illustrated in fig. 5; a side view of fig. 5 is representatively illustrated in fig. 6.

Unlike the structural design in which the first bosses 121 and the second bosses 131 are arranged to be staggered in the extending direction X in the embodiment shown in fig. 4, the first bosses 121 and the second bosses 131 may be correspondingly arranged along the extending direction X of the frame 100 in an embodiment of the present utility model as shown in fig. 5 and 6.

Referring to fig. 7 and 8, a partially enlarged schematic illustration of a case of a battery pack in yet another exemplary embodiment capable of embodying principles of the present utility model is representatively illustrated in fig. 7; a side view of fig. 7 is representatively illustrated in fig. 8.

As shown in fig. 7 and 8, taking still an example of a structural design in which the first bosses 121 and the second bosses 131 are correspondingly arranged in the extending direction X, in an embodiment of the present utility model, at least one first boss 121 and at least one second boss 131 may be an integral structure, that is, both of them are embodied as the structure of the integral boss 150 in the drawings. Through the above structural design, the present utility model can utilize the integral boss 150 as the reinforcing rib of the frame 100, thereby further improving the structural strength of the frame 100.

Referring to fig. 9, a partial top view of a case of a battery pack in yet another exemplary embodiment that can embody principles of the present utility model is representatively illustrated in fig. 9.

As shown in fig. 9, in an embodiment of the present utility model, a top surface or a bottom surface of the bottom connection plate 130 is defined as a reference surface, on which a width from one end of the orthographic projection of the second boss 131, which is far from the body 110, to the other end connected to the body 110 may be gradually widened. Through the above structural design, the present utility model can utilize the special shape of the second boss 131 to disperse the stress transferred to the body 110 when the structure such as the bottom plate is impacted externally, so as to further improve the structural stability of the box.

Similarly, in an embodiment of the present utility model, not shown, a top surface or a bottom surface of the top connection plate 120 is defined as a reference surface, on which a width from one end of the orthographic projection of the first boss 121, which is far from the body 110, to the other end connected to the body 110 may be gradually widened. Through the structural design, when the structures such as the box cover and the like are subjected to external impact, the stress transmitted to the body 110 can be dispersed by utilizing the special shape of the first boss 121, so that the structural stability of the box body is further improved.

Referring to fig. 10, a partially enlarged schematic view of a case of a battery pack capable of embodying the principles of the present utility model in still another exemplary embodiment is representatively illustrated in fig. 10, with a portion of the structure shown in further enlarged detail.

As shown in fig. 10, in an embodiment of the present utility model, an arc-shaped transition structure 1311 may be provided between an edge of the bottom of the second boss 131 and the top surface of the bottom connection plate 130. Through the structural design, the connecting area of the second boss 131 and the bottom connecting plate 130 can be further increased, so that stress dispersion at the position is facilitated, and the structural strength of the frame 100 is improved.

Similarly, in an embodiment of the present utility model, not shown, an arc-shaped transition structure may be provided between the edge of the top of the first boss 121 and the bottom surface of the top connection plate 120. Through the structural design, the connecting area of the first boss 121 and the top connecting plate 120 can be further increased, so that stress dispersion at the position is facilitated, and the structural strength of the frame 100 is improved.

In one embodiment of the present utility model, as shown in fig. 2, the first connector connecting the cover to the top connection plate 120 may be a bolt. On this basis, the cover may be provided with a first through hole (not shown in the drawings), the top connection plate 120 may be provided with a first mounting hole 122, the position of the first mounting hole 122 corresponds to that of the first through hole, and a part of the duct of the first mounting hole 122 is located in the first boss 121. In some embodiments, the top connecting plate 120 of the case cover and the frame 100 may be connected by other types of first connecting members, such as, but not limited to, rivets, etc., but not limited to this embodiment.

As shown in fig. 3, in an embodiment of the present utility model, the second connection member connecting the bottom plate and the bottom connection plate 130 may employ bolts. On this basis, the bottom plate may be provided with a second through hole (not shown in the drawings), the bottom connection plate 130 may be provided with a second mounting hole 132, the position of the second mounting hole 132 corresponds to the position of the second through hole, and a part of the duct of the second mounting hole 132 is located in the second boss 131. In some embodiments, the bottom plate and the bottom connecting plate 130 of the frame 100 may be connected by a second connecting member of other types, such as, but not limited to, rivets, etc., but not limited to this embodiment.

In one embodiment of the utility model, the rim 100 may be cast. Through the design, the structure of the body 110, the bottom connecting plate 120, the bottom connecting plate 130, the first boss 121 and the second boss 131 can be formed on the frame 100 more easily by utilizing the process characteristics of the die casting process, so that the process complexity is further simplified, and the manufacturing efficiency is improved.

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 includes a case body and a case cover, wherein the frame 100 of the case body includes a body 110 and a top connecting plate 120, the top connecting plate 120 extends outside the body 110 to form an accommodating space 140, the case cover is connected to the top connecting plate 120 via a connecting member, a boss is disposed at the bottom of the top connecting plate 120, the boss is accommodated in the accommodating space 140, extends to the body parallel to the plane of the top connecting plate 120 and is connected to the body 110, and the connecting member partially extends into the boss and is fixedly connected with the boss. Through the structural design, the first boss 121 can be utilized to improve the fixed connection area of the first connecting piece, so that the connection strength of the box cover and the frame 100 is improved. In addition, since the boss extends and is connected to the body 110 of the frame 100, the structural strength of the boss can be enhanced, deformation or even tearing of the connection position under the vibration working condition is avoided, 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

1. The battery pack is characterized by comprising a box body and a box cover, wherein the box body comprises a frame, the frame is provided with a body and a top connecting plate, the top connecting plate is connected to the top surface of the body, the plane of the body and the plane of the top connecting plate are arranged at an angle, the top connecting plate protrudes out of the outer side of the body, the body and the top connecting plate jointly form an accommodating space, and the box body is connected to the top surface of the top connecting plate through a first connecting piece; the bottom surface of the top connecting plate is provided with a first boss, the first connecting piece part stretches into the first boss and is fixedly connected with the first boss, the first boss extends to the body and is connected to the body in parallel with the plane where the top connecting plate is located, and the first boss is accommodated in the accommodating space.

2. The battery pack according to claim 1, wherein a top surface or a bottom surface of the top connection plate is defined as a reference surface on which a width of an end of the orthographic projection of the first boss, which is far from the body, is gradually wider to the other end connected to the body.

3. The battery pack of claim 1, wherein an arcuate transition is provided between an edge of the top of the first boss and the bottom surface of the top web.

4. The battery pack according to claim 1, wherein the first connecting member is a bolt, the case cover is provided with a first through hole, the top connecting plate is provided with a first mounting hole, the position of the first mounting hole corresponds to the position of the first through hole, and a part of pore canal of the first mounting hole is located in the first boss.

5. The battery pack according to claim 1, further comprising a bottom plate, wherein the frame further comprises a bottom connection plate, the bottom connection plate is connected to the bottom surface of the body, the plane of the body and the plane of the bottom connection plate are arranged at an angle, the bottom connection plate protrudes out of the body, and the body, the top connection plate and the bottom connection plate jointly form the accommodating space; the box body is connected to the bottom surface of the bottom connecting plate through a second connecting piece, a second boss is arranged on the top surface of the bottom connecting plate, the second connecting piece partially stretches into the second boss and is fixedly connected with the second boss, the second boss extends to the body and is connected to the body in parallel to the plane where the bottom connecting plate is located, and the second boss is accommodated in the accommodating space.

6. The battery pack of claim 5, wherein the first and second bosses are staggered along the extension of the rim.

7. The battery pack according to claim 5, wherein the first boss and the second boss are disposed correspondingly along an extending direction of the frame.

8. The battery pack of claim 7, wherein at least one of the first bosses is integrally formed with at least one of the second bosses.

9. The battery pack according to claim 5, wherein a top surface or a bottom surface of the bottom connection plate is defined as a reference surface on which a width of an end of the orthographic projection of the second boss, which is far from the body, is gradually wider to the other end connected to the body.

10. The battery pack of claim 5, wherein an arcuate transition is provided between an edge of the bottom of the second boss and the top surface of the bottom web.

11. The battery pack according to claim 5, wherein the second connecting member is a bolt, the bottom plate is provided with a second through hole, the bottom connecting plate is provided with a second mounting hole, the position of the second mounting hole corresponds to the position of the second through hole, and a part of pore canal of the second mounting hole is located in the second boss.

12. The battery pack of any one of claims 1 to 11, wherein the frame is a casting.