CN217589254U - Battery pack box and battery pack with same - Google Patents

Abstract

The utility model provides a battery package box and have its battery package, battery package box include box lateral wall and bottom plate, and battery package box still includes: the connecting piece is connected with the side wall of the box body, and at least part of the connecting piece protrudes out of the inner side surface of the side wall of the box body; at least a portion of the connector supports the base plate and is bonded to the base plate. The utility model discloses a battery package box has solved the too big and low problem of production efficiency of battery package case weight among the prior art.

Description

Battery pack box and battery pack with same

Technical Field

The utility model relates to a battery technology field particularly, relates to a battery package box and have its battery package.

Background

As an important part of the vehicle and the energy storage system, the performance and the structural design of the battery pack will directly affect the overall performance of the vehicle and the energy storage system. And the battery package box has decisive effect in the design of battery package structure, and the structural strength and whole weight of battery package box all can produce huge influence to vehicle and energy storage system's operation.

At present, an aluminum alloy frame is usually adopted for a battery pack box body, the aluminum alloy frame and a bottom plate are connected in a welding or threaded connection mode, friction stir welding is generally adopted for welding in order to reduce deformation of the aluminum alloy frame and the bottom plate caused by welding stress, and the production rhythm is influenced due to the fact that the efficiency of the friction stir welding is too low; when adopting threaded connection between aluminum alloy frame and the bottom plate, then need steps such as trompil and processing screw thread, can lead to production rhythm to reduce equally to connecting bolt's quantity is too much, can increase the holistic weight of battery package box.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a battery package box and have its battery package to solve the too big and low problem of production efficiency of battery package box weight among the prior art.

In order to achieve the above object, according to an aspect of the present invention, there is provided a battery pack case, including a case side wall and a bottom plate, the battery pack case further includes: the connecting piece is connected with the side wall of the box body, and at least part of the connecting piece protrudes out of the inner side surface of the side wall of the box body; at least a portion of the connector supports the base plate and is bonded to the base plate.

Furthermore, the connecting piece comprises a first connecting part and a second connecting part connected with the first connecting part, and the first connecting part is connected with the bottom surface of the side wall of the box body; the second connecting portion protrudes out of the inner side face of the side wall of the box body, and the second connecting portion is bonded with the bottom plate.

Further, the connecting piece is the loop configuration, and first connecting portion encircles the setting of second connecting portion.

Furthermore, the top surface of the second connecting part is a horizontal plane, and the bottom plate is connected with the top surface of the second connecting part.

Furthermore, the connecting piece is provided with a bulge, the bulge protrudes out of the connecting piece towards the direction of the bottom plate, and the connecting piece supports the bottom plate through the bulge; the bulge, the connecting piece and the side wall of the box body jointly form an accommodating space for accommodating the adhesive, so that the bottom plate is connected with the connecting piece through the adhesive in the accommodating space.

Further, the bulge is arranged at one end of at least part of the connecting piece far away from the side wall of the box body.

Further, the battery pack case further includes: the protection plate is arranged at the bottom of the bottom plate.

Furthermore, the protection plate is arranged in a bonding manner with the bottom plate.

Further, the protection plate has a protection plate main body and a protection protrusion, and the protection protrusion is arranged on the bottom surface of the protection plate main body in a protruding mode.

According to the utility model discloses a further aspect provides a battery pack, including electric core subassembly, the battery pack still includes foretell battery pack box.

The utility model discloses a battery package box includes the box lateral wall, bottom plate and connecting piece, the connecting piece is connected with the box lateral wall and the at least partial protrusion of connecting piece sets up in the medial surface of box lateral wall, the at least partial supporting baseplate of connecting piece just bonds with the bottom plate, the connected mode process of bonding is simple, unnecessary process connection connecting piece and bottom plate have been avoided, the production efficiency of battery package box has been improved, and the connected mode of bonding does not need unnecessary part to carry out mechanical connection to connecting piece and bottom plate, the whole weight of battery package box has been alleviateed, thereby the problem that battery package box weight among the prior art is too big and production efficiency is low has been solved.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows an exploded view of an embodiment of a battery pack case according to the present invention;

fig. 2 shows an isometric view of a battery pack case according to the present invention without a protective plate installed;

fig. 3 shows a bottom view of the battery pack case without the protective plate installed according to the present invention;

fig. 4 showsbase:Sub>A cross-sectional view of thebase:Sub>A-base:Sub>A cross-section of the battery pack case of fig. 3, in accordance with the present invention;

fig. 5 shows an isometric view of a battery pack case with a protective plate installed according to the present invention;

fig. 6 shows a bottom view of the battery pack case with the protective plate installed thereon according to the present invention;

fig. 7 shows a cross-sectional view of the B-B cross-section of the battery pack case of fig. 6 according to the present invention;

fig. 8 shows an exploded view of an embodiment of a battery pack according to the present invention;

fig. 9 shows a top view of the battery pack case according to the present invention without the bottom plate installed;

fig. 10 shows an isometric view of some embodiments of a battery pack case according to the present invention;

fig. 11 illustrates a bottom view of some embodiments of a battery pack case according to the present invention;

fig. 12 shows a cross-sectional view of the C-C section of the battery pack case of fig. 11 according to the present invention.

Wherein the figures include the following reference numerals:

10. a side wall of the box body; 20. a connecting member; 21. a first connection portion; 22. a second connecting portion; 23. an inner side surface; 24. a boss portion; 31. an accommodating space; 40. a base plate; 50. a protection plate; 51. a guard plate main body; 52. a protective projection; 60. electric core subassembly.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The utility model provides a battery package box please refer to fig. 1 to 12, including box lateral wall 10 and bottom plate 40, the battery package box still includes: the connecting piece 20 is connected with the box body side wall 10, and at least part of the connecting piece 20 is arranged to protrude out of the inner side surface 23 of the box body side wall 10; at least a portion of the connector 20 supports the base plate 40 and is bonded to the base plate 40.

The utility model discloses a battery package box includes box lateral wall 10, bottom plate 40 and connecting piece 20, connecting piece 20 is connected with box lateral wall 10 and the at least partial protrusion of connecting piece 20 sets up in the medial surface 23 of box lateral wall 10, at least partial supporting baseplate 40 of connecting piece 20 and bonds with bottom plate 40, the connected mode process that bonds is simple, avoided unnecessary process to connect connecting piece 20 and bottom plate 40, the production efficiency of battery package box has been improved, and the connected mode that bonds does not need unnecessary part to carry out mechanical connection to connecting piece 20 and bottom plate 40, the whole weight of battery package box has been alleviateed, thereby the problem that battery package box weight among the prior art is too big and production efficiency is low has been solved.

Specifically, the side wall 10 of the box body is square, is arranged at 90 degrees to the horizontal plane, and is made by extruding aluminum profiles or rolling sheet metals.

Optionally, the box sidewall 10 may be manufactured by a stamping or casting process, and the preset included angle between the box sidewall 10 and the horizontal plane is greater than 0 degree and less than 180 degrees.

Alternatively, the base plate 40 is compounded from a plurality of materials, including a composite material formed by compounding fibers and resin; or a sandwich honeycomb plate which comprises PP honeycombs, aramid honeycombs, aluminum honeycombs and the like; or a foam interlayer, wherein the foam interlayer comprises polyurethane foam, foamed aluminum and the like.

In the present embodiment, the connection member 20 includes a first connection portion 21 and a second connection portion 22 connected to the first connection portion 21, and the first connection portion 21 is connected to the bottom surface of the case side wall 10; the second connecting portion 22 protrudes from the inner surface of the case side wall 10, and the second connecting portion 22 is bonded to the bottom plate 40.

In specific implementation, the first connecting part 21 is arranged to connect the second connecting part 22 and the box side wall 10, so that the connection between the second connecting part 22 and the box side wall 10 is more stable; the second connecting portion 22 protrudes from the inner side surface of the side wall 10 of the case body, so that the connecting member 20 has a bonding space with the bottom plate 40, and the connection between the connecting member 20 and the bottom plate 40 is more stable.

In the present embodiment, the connecting member 20 has a ring-shaped structure, and the first connecting portion 21 is disposed around the second connecting portion 22.

In specific implementation, the connecting piece 20 is of an annular structure, so that the edges of the bottom plate 40 can be bonded with the connecting piece, the connecting strength between the bottom plate 40 and the connecting piece 20 is increased, and the phenomenon that the bottom plate 40 falls off after being connected with the connecting piece 20 is avoided; the first connecting portion 21 is disposed around the second connecting portion 22, and the second connecting portion 22 is completely connected to the case side wall 10, thereby increasing the connection strength between the second connecting portion 22 and the case side wall 10.

Specifically, the connecting member 20 is a square ring, the square ring is formed by welding four sides of the square ring, and the surface of the connecting member 20 is flat by polishing after welding, or the surface of the connecting member 20 is flat and continuous by using a filling material, so that the connecting member 20 is more stable when being bonded with the bottom plate 40, and the condition that the bottom plate 40 is not flat after bonding due to the uneven surface of the connecting member 20 cannot occur.

In other embodiments, as shown in fig. 10 to 12, the cabinet side wall 10 is polygonal, and the connectors 20 connected to the cabinet side wall 10 are polygonal rings having the same number of sides as the cabinet side wall 10; the bottom plate 40 is a polygonal plate having the same number of sides as the polygonal box side wall 10. Here, the polygon includes a pentagon and a shape having more than five sides.

In the present embodiment, the top surface of the second connection portion 22 is a horizontal surface, and the bottom plate 40 is connected to the top surface of the second connection portion 22.

In specific implementation, the top surface of the second connecting portion 22 is a horizontal surface, so that the bottom plate 40 is not inclined after being connected with the top surface of the second connecting portion 22, and the connection strength between the bottom plate 40 and the top surface of the second connecting portion 22 is ensured.

In the present embodiment, the connecting member 20 is provided with a protruding portion 24, the protruding portion 24 protrudes from the connecting member 20 toward the bottom plate 40, and the connecting member 20 supports the bottom plate 40 through the protruding portion 24; the protruding portion 24, the connecting member 20 and the case side wall 10 together form a receiving space 31 for receiving an adhesive, so that the bottom plate 40 is connected to the connecting member 20 by the adhesive in the receiving space 31.

When the concrete implementation, the setting of bellying 24 makes bottom plate 40 when being connected with second connecting portion 22, the adhesive can set up in accommodation space 31, and the height of adhesive equals with bellying 24's height, like this when bottom plate 40 bonds on the top surface of second connecting portion 22, accessible bellying 24 lifts a take the altitude, thereby avoid bottom plate 40 after certain outside convex deformation appears, can not surpass the scope of box lateral wall 10, and then avoided bottom plate 40 to contact with external hard material after deformation, cause the damage to bottom plate 40, the part that contacts with external hard material is box lateral wall 10 this moment.

Specifically, the adhesion of the adhesive to the bottom plate 40 provides sealing between the bottom plate 40 and the connecting member 20, and the adhesive has certain toughness, so that the sealing between the bottom plate 40 and the connecting member 20 can be ensured by less than 10% of strain under the working conditions of impact vibration and the like.

Specifically, the height of the projection 24 is 0.1 to 2mm.

In this embodiment, the projection 24 is provided at an end of at least a portion of the connector 20 remote from the tank side wall 10.

In practical implementation, the protrusion 24 is disposed at an end of at least a portion of the connecting member 20 away from the side wall 10 of the box body, so that the accommodating space 31 is large enough to accommodate enough adhesive, and the connection between the bottom plate 40 and the connecting member 20 is stable enough.

Specifically, the sum of the bonding width of the bottom plate 40 and the second connecting portion 22 and the overlapping width of the bottom plate 40 and the protruding portion 24 is 10-120 mm.

In this embodiment, the battery pack case further includes: and the protection plate 50 is arranged at the bottom of the bottom plate 40.

During the concrete implementation, guard plate 50 plays the guard action to bottom plate 40 in the setting of the bottom of bottom plate 40, in the transportation of battery package box, can produce the holistic collision of battery package box, consequently sets up guard plate 50 in the bottom of bottom plate 40, can be when the battery package box bumps, and external hard material bumps with guard plate 50 bottom the bottom plate 40 earlier to bottom plate 40 has been protected.

In the present embodiment, the shielding plate 50 is adhesively provided with the base plate 40.

In specific implementation, the protection plate 50 can be tightly attached to the bottom surface of the bottom plate 40 due to the arrangement, so that a better protection effect is achieved.

Alternatively, the protection plate 50 may be disposed at the bottom of the base plate 40 by using a bolt connection, so as to protect the base plate 40.

In the present embodiment, the guard plate 50 has a guard plate main body 51 and a guard protrusion 52, and the guard protrusion 52 is disposed to protrude from a bottom surface of the guard plate main body 51.

During specific implementation, the arrangement that the protection protrusions 52 protrude from the bottom surface of the protection plate main body 51 increases the overall strength of the protection plate 50, so that the problem that the protection effect of the protection plate 50 is poor due to the fact that the protection plate main body 51 is too thin is solved, and the problem that the weight of a battery pack box body is too large due to the fact that the protection plate main body 51 is too thick is solved.

The utility model also provides a battery package, including electric core subassembly 60, the battery package still includes the battery package box in the above-mentioned embodiment.

Specifically, the electric core assembly 60 is adhesively disposed on top of the base plate 40.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

the utility model discloses a battery package box includes box lateral wall 10, bottom plate 40 and connecting piece 20, connecting piece 20 is connected with box lateral wall 10 and the at least partial protrusion of connecting piece 20 sets up in the medial surface 23 of box lateral wall 10, at least partial supporting baseplate 40 of connecting piece 20 and bonds with bottom plate 40, the connected mode process that bonds is simple, avoided unnecessary process to connect connecting piece 20 and bottom plate 40, the production efficiency of battery package box has been improved, and the connected mode that bonds does not need unnecessary part to carry out mechanical connection to connecting piece 20 and bottom plate 40, the whole weight of battery package box has been alleviateed, thereby the problem that battery package box weight among the prior art is too big and production efficiency is low has been solved.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; above" may include both orientations "at 8230; \8230; above" and "at 8230; \8230; below". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A battery pack case comprising case side walls (10) and a bottom plate (40), characterized in that the battery pack case further comprises:

the connecting piece (20) is connected with the box body side wall (10), and at least part of the connecting piece (20) protrudes out of the inner side surface (23) of the box body side wall (10); at least part of the connecting member (20) supports the base plate (40) and is bonded to the base plate (40).

2. The battery pack case according to claim 1, wherein the connecting member (20) includes a first connecting portion (21) and a second connecting portion (22) connected to the first connecting portion (21), the first connecting portion (21) being connected to a bottom surface of the case side wall (10); the second connecting portion (22) protrudes out of the inner side face of the side wall (10) of the box body, and the second connecting portion (22) is bonded with the bottom plate (40).

3. The battery pack case according to claim 2, wherein the connection member (20) has a ring-shaped structure, and the first connection portion (21) is disposed around the second connection portion (22).

4. The battery pack case according to claim 2, wherein the top surface of the second connecting portion (22) is a horizontal surface, and the bottom plate (40) is connected to the top surface of the second connecting portion (22).

5. The battery pack case according to claim 1, wherein a protrusion (24) is provided on the connector (20), the protrusion (24) is provided protruding from the connector (20) in a direction toward the bottom plate (40), and the connector (20) supports the bottom plate (40) via the protrusion (24); the bulge (24), the connecting piece (20) and the box body side wall (10) jointly form an accommodating space (31) for accommodating adhesive, so that the bottom plate (40) is connected with the connecting piece (20) through the adhesive in the accommodating space (31).

6. Battery pack case according to claim 5, characterized in that the projection (24) is provided at an end of at least part of the connector (20) remote from the case side wall (10).

7. The battery pack case according to any one of claims 1 to 6, further comprising:

a protection plate (50), wherein the protection plate (50) is arranged at the bottom of the bottom plate (40).

8. The battery pack case according to claim 7, wherein the protection plate (50) is adhesively provided with the base plate (40).

9. The battery pack case according to claim 7, wherein the protection plate (50) has a protection plate main body (51) and a protection protrusion (52), and the protection protrusion (52) is provided to protrude from a bottom surface of the protection plate main body (51).

10. A battery pack comprising a battery pack assembly (60), characterized in that the battery pack further comprises a battery pack case according to any one of claims 1 to 9.

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