A battery box profile, a battery box and an expandable battery box group

Abstract

The utility model relates to a battery box profile, a battery box and an expandable battery box group, wherein the cross-sectional structure of the battery box profile includes a sealing bearing surface, an installation bearing surface, a cavity, a sealing surface and a sealing installation surface from top to bottom; the sealing bearing surface and the sealing surface are both arranged parallel to the horizontal plane, and the installation bearing surface and the sealing installation surface are both L-shaped bending structures, and when the upper and lower battery box profiles are stacked, the sealing bearing surface can match the sealing surface of another battery box profile adjacent to the upper side, and the installation bearing surface can match the sealing installation surface of another battery box profile adjacent to the upper side. The utility model can avoid the problem of insufficient strength caused by the simple use of thin plate materials in the prior art, and significantly improves the structural strength and bearing capacity of the battery box. When the upper and lower battery boxes are docked, the profile shape structure can be automatically positioned and aligned, and the two only need to be connected by means of embedded bolts, etc., which not only simplifies the box assembly process, but also improves the assembly accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicle power batteries, and in particular to a battery box profile, a battery box and an expandable battery box group. Background Art

[0002] Battery packs have the characteristics of high power, long life, no pollution, safety, reliability, and lightness, and are widely used in new energy vehicles. The structure of the battery pack includes a battery box and a battery module arranged inside the box, and the battery box is used to provide protection for the battery module.

[0003] Traditional battery boxes are mostly made of sheet metal and composite materials (such as glass fiber reinforced plastics, etc.) welded together; the battery box is mostly made of sheet metal, usually carbon steel, and is formed through stamping, shearing, bending and other processes; the chassis and the box cover are assembled together by flange welding and sealed with materials such as sealants. Although the manufacturing process of this assembled structure is relatively mature, it has the following major defects:

[0004] 1) Since the battery box is mostly made of carbon steel, the overall weight is heavy, which is not conducive to improving the vehicle's range and energy efficiency;

[0005] 2) Since the battery box is welded together from multiple parts and sealed by the flange edge, the poor flatness of the flange edge leads to poor sealing effect, posing a safety hazard;

[0006] 3) In order to reduce weight, the battery box is often welded with thin plates, but this method makes the entire structure lack sufficient bearing capacity and has poor reliability under working conditions such as vibration and impact. Utility Model Content

[0007] The utility model discloses a battery box profile, a battery box and an expandable battery box group, aiming to solve the technical problems existing in the prior art.

[0008] The utility model adopts the following technical solutions:

[0009] On the one hand, the embodiment of the utility model provides a battery box profile, the cross-sectional structure of the battery box profile includes a sealing bearing surface, an installation bearing surface, a cavity, a sealing surface and a sealing installation surface from top to bottom;

[0010] The sealing bearing surface and the sealing surface are both arranged parallel to the horizontal plane, and the installation bearing surface and the sealing installation surface are both L-shaped bending structures. When the upper and lower battery box profiles are stacked, the sealing bearing surface can match the sealing surface of another adjacent battery box profile above, and the installation bearing surface can match the sealing installation surface of another adjacent battery box profile above.

[0011] As a preferred technical solution, the mounting bearing surface includes a first mounting bearing surface and a second mounting bearing surface. The first mounting bearing surface is arranged perpendicular to the horizontal plane and is bent and connected with the sealing bearing surface. The second mounting bearing surface is arranged parallel to the horizontal plane.

[0012] As a preferred technical solution, the sealing installation surface includes a first sealing installation surface and a second sealing installation surface. The first sealing installation surface is arranged perpendicular to the horizontal plane and is bent and connected with the sealing surface. The second sealing installation surface is arranged parallel to the horizontal plane.

[0013] As a preferred technical solution, the size of the first mounting bearing surface matches the first sealing mounting surface of another battery box profile adjacent above, and the size of the second mounting bearing surface matches the second sealing mounting surface of another battery box profile adjacent above.

[0014] As a preferred technical solution, the sealing surface extends toward the interior of the battery box, and the width of the sealing surface is greater than the width of the sealing bearing surface.

[0015] As a preferred technical solution, the cavity is configured to be rectangular, hollow or other preset shapes.

[0016] As a preferred technical solution, the battery box profile includes aluminum alloy material or extruded composite material.

[0017] In a second aspect, an embodiment of the utility model further provides a battery box, comprising a battery box profile as described in any one of the above items, wherein the battery box profile is configured as a side wall of the battery box.

[0018] In the third aspect, an embodiment of the utility model provides an expandable battery box group, comprising a plurality of battery boxes as described above, wherein the plurality of battery boxes are stacked in sequence from bottom to top, and the side walls of two adjacent upper and lower battery boxes correspond to each other, and a gap is reserved between the two. The gap is filled with a sealing gasket or a sealant for sealing between the two.

[0019] As a preferred technical solution, the side walls of the two upper and lower adjacent battery boxes are correspondingly abutted against each other, and the two are connected by embedded bolts or through bolts.

[0020] One embodiment of the above utility model has the following advantages or beneficial effects:

[0021] The utility model mainly provides a battery box profile and a battery box made of the profile. Since the battery box profile is provided with a sealing bearing surface, an installation bearing surface and other structures, when multiple battery boxes are stacked up and down, these surfaces can match and support each other to form an overall bearing structure, thereby avoiding the problem of insufficient strength caused by simply using thin plate materials in the prior art, and significantly improving the structural strength and bearing capacity of the battery box; on the other hand, when the upper and lower battery boxes are butt-jointed, they only need to be connected by means of embedded bolts or the like, without the need for complicated welding procedures, and the assembly is convenient, and the profile shape structure can be automatically positioned and aligned, which not only simplifies the box assembly process, but also improves the assembly accuracy; by setting structures such as sealing surfaces and sealing installation surfaces, when the corresponding surfaces of the upper and lower battery boxes match, sealants can be filled in the gaps for sealing, which structurally solves the problem of poor sealing of traditional welding processes and realizes reliable sealing of the box structure; in addition, since the battery box profile is made of lightweight and high-strength materials such as aluminum alloy or extruded composite materials, the box weight can be greatly reduced compared with traditional materials such as carbon steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following is a brief introduction to the drawings required for the description of the embodiment, which constitute a part of the utility model. The schematic embodiment of the utility model and its description explain the utility model and do not constitute an improper limitation of the utility model. In the drawings:

[0023] Figure 1 This is a schematic diagram of the structure of the battery box profile disclosed in Example 1 of the utility model;

[0024] Figure 2 This is a schematic structural diagram of a battery box profile with upper and lower butt joints disclosed in Example 1 of the utility model;

[0025] Figure 3 A three-dimensional diagram of a battery box disclosed in Example 2 of the utility model;

[0026] Figure 4 A cross-sectional view of a battery box disclosed in Example 2 of the utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the expandable battery box group disclosed in Example 2 of the utility model.

[0028] Description of reference numerals:

[0029] The sealing bearing surface 11 , the first mounting bearing surface 21 , the second mounting bearing surface 22 , the cavity 31 , the sealing surface 41 , the first sealing mounting surface 51 , and the second sealing mounting surface 52 . DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. In the description of the utility model, it should be noted that the term "or" is usually used in the sense of including "and / or", unless the content clearly indicates otherwise.

[0031] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0032] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Example 1

[0034] refer to Figure 1 , Figure 2 The present embodiment provides a battery box profile, which is described by taking its cross section as an example. The cross section of the battery box profile includes a sealing bearing surface 11, an installation bearing surface, a cavity 31, a sealing surface 41 and a sealing installation surface from top to bottom, wherein the sealing bearing surface 11 and the sealing surface 41 are both arranged parallel to the horizontal plane, and the installation bearing surface and the sealing installation surface are both L-shaped bending structures. When the upper and lower battery box profiles are stacked and docked, the sealing bearing surface 11 can match with the sealing surface 41 of another battery box profile adjacent to the upper part, and the installation bearing surface can match with the sealing installation surface of another battery box profile adjacent to the upper part.

[0035] In a preferred embodiment, the mounting bearing surface includes a first mounting bearing surface 21 and a second mounting bearing surface 22. The first mounting bearing surface 21 is arranged perpendicular to the horizontal plane and connected with the sealing bearing surface 11 at a 90° bend; the second mounting bearing surface 22 is arranged parallel to the horizontal plane.

[0036] In a preferred embodiment, the sealing mounting surface includes a first sealing mounting surface 51 and a second sealing mounting surface 52. The first sealing mounting surface 51 is arranged perpendicular to the horizontal plane and connected with the sealing surface 41 at a 90° bend. The second sealing mounting surface 52 is arranged parallel to the horizontal plane.

[0037] In order to ensure that the battery box profiles stacked up and down can be automatically positioned, aligned and accurately matched, it is preferred that the size of the first mounting bearing surface 21 matches the first sealing mounting surface 51 of another adjacent battery box profile above, and the size of the second mounting bearing surface 22 matches the second sealing mounting surface 52 of another adjacent battery box profile above.

[0038] In a preferred embodiment, the sealing surface 41 extends toward the inside of the battery box and can be used as the bottom surface for placing the battery module. The width of the sealing surface 41 is preferably greater than the width of the sealing bearing surface 11 to improve the sealing performance.

[0039] In a preferred embodiment, the structure in the cavity 31 is configured to be rectangular, hollow or other preset shapes, such as triangle or other polygons, which is not specifically limited in this embodiment.

[0040] In a preferred embodiment, the battery box profile is made of aluminum alloy material or extruded composite material to take into account the needs of structural strength and lightweight, and can greatly reduce the weight of the box compared to traditional materials such as carbon steel; wherein, extruded composite material refers to a composite material manufactured using an extrusion molding process, which is mainly composed of a matrix material, a reinforcement and an additive. By adjusting the proportion and formula of each component, an extruded composite material with different properties can be obtained. Specifically, the specific components of the extruded composite material are no longer specifically limited in this embodiment, and those skilled in the art can choose any embodiment disclosed in the prior art.

[0041] Specifically, in this embodiment, the dimensions of each surface of the battery box profile are no longer specifically limited, and those skilled in the art can make adaptive adjustments according to actual needs.

[0042] Example 2

[0043] refer to Figure 3 , Figure 4 In this embodiment, a battery box is provided. The battery box is made of the battery box profile described in the above embodiment 1. The technical features recorded in the above embodiment 1 are naturally inherited in this embodiment and will not be repeated.

[0044] Preferably, the side walls of the four sides of the battery box are made of the battery box profile in the above-mentioned embodiment 1. In this embodiment, the size of the battery box is no longer specifically limited, and those skilled in the art can make adaptive adjustments according to actual needs.

[0045] In a preferred embodiment, multiple battery boxes can be stacked from bottom to top to form an expandable battery box group, such as Figure 5 In the expandable battery box group, the side walls of the two upper and lower adjacent battery boxes correspond to each other, and a gap is reserved between the two. The gap is filled with a sealing gasket or a sealant to achieve a seal between the two.

[0046] Preferably, the side walls of two upper and lower adjacent battery boxes are correspondingly abutted against each other, and the two are connected by embedded bolts or through bolts.

[0047] In this embodiment, when multiple battery boxes are stacked up and down, the upper and lower adjacent surfaces can match and support each other to form an overall load-bearing structure, thereby avoiding the problem of insufficient strength caused by simply using thin plate materials in the prior art, and significantly improving the structural strength and load-bearing capacity of the battery box; on the other hand, when the upper and lower battery boxes are connected, no complicated welding process is required, and the assembly is convenient, and the profile shape structure can be automatically positioned and aligned, which not only simplifies the box assembly process, but also improves the assembly accuracy; by setting sealing surfaces and sealing mounting surfaces and other structures, when the corresponding surfaces of the upper and lower battery boxes match, sealant can be filled in the gap for sealing, which structurally solves the problem of poor sealing of traditional welding processes and achieves reliable sealing of the box structure.

[0048] Although example embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above example embodiments are merely exemplary and are not intended to limit the scope of the present application to this. Those of ordinary skill in the art may make various changes and modifications therein without departing from the scope and spirit of the present application. All these changes and modifications are intended to be included within the scope of the present application as required by the appended claims.

[0049] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0050] Similarly, it should be understood that in order to streamline the present application and help understand one or more of the various utility model aspects, in the description of the exemplary embodiments of the present application, the various features of the present application are sometimes grouped together into a single embodiment, figure, or description thereof. However, the method of the present application should not be interpreted as reflecting the following intention: the claimed application requires more features than the features clearly stated in each claim. More specifically, as reflected in the corresponding claims, its utility model point is that the corresponding technical problem can be solved with less than all the features of a single disclosed embodiment. Therefore, the claims following the specific embodiment are hereby explicitly incorporated into the specific embodiment, wherein each claim itself serves as a separate embodiment of the present application.

[0051] It will be understood by those skilled in the art that, except for mutually exclusive features, all features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or device disclosed in this specification may be combined in any combination. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature that provides the same, equivalent or similar purpose.

Claims

1. A battery box profile, characterized in that: The cross-sectional structure of the battery box profile includes, from top to bottom, a sealing bearing surface, an installation bearing surface, a cavity, a sealing surface and a sealing installation surface; The sealing bearing surface and the sealing surface are both arranged parallel to the horizontal plane, and the installation bearing surface and the sealing installation surface are both L-shaped bending structures. When the upper and lower battery box profiles are stacked, the sealing bearing surface can match the sealing surface of another adjacent battery box profile above, and the installation bearing surface can match the sealing installation surface of another adjacent battery box profile above.

2. The battery box profile according to claim 1, characterized in that: The mounting bearing surface includes a first mounting bearing surface and a second mounting bearing surface. The first mounting bearing surface is arranged perpendicular to the horizontal plane and is bent and connected with the sealing bearing surface. The second mounting bearing surface is arranged parallel to the horizontal plane.

3. The battery box profile according to claim 2, characterized in that: The sealing installation surface includes a first sealing installation surface and a second sealing installation surface. The first sealing installation surface is arranged perpendicular to the horizontal plane and is bent and connected with the sealing surface. The second sealing installation surface is arranged parallel to the horizontal plane.

4. The battery box profile according to claim 3, characterized in that: The size of the first mounting bearing surface matches the first sealing mounting surface of another battery box profile adjacent above, and the size of the second mounting bearing surface matches the second sealing mounting surface of another battery box profile adjacent above.

5. The battery box profile according to claim 4, characterized in that: The sealing surface extends toward the interior of the battery box, and the width of the sealing surface is greater than the width of the sealing bearing surface.

6. The battery box profile according to claim 1, characterized in that: The cavity is configured in a rectangular or hollow shape.

7. The battery box profile according to claim 1, characterized in that: The battery box profile includes aluminum alloy material or extruded composite material.

8. A battery box, characterized in that: The battery box profile comprises the battery box profile as claimed in any one of claims 1 to 7, wherein the battery box profile is configured as a side wall of the battery box.

9. An expandable battery box group, characterized in that: It comprises a plurality of battery boxes as claimed in claim 8, wherein the plurality of battery boxes are stacked in sequence from bottom to top, and the side walls of two adjacent battery boxes above and below correspond to each other, and a gap is reserved between the two, and the gap is filled with a sealing gasket or a sealant for sealing between the two.

10. The expandable battery box assembly according to claim 9, characterized in that: The side walls of the two upper and lower adjacent battery boxes are correspondingly abutted against each other, and the two are connected by embedded bolts or through bolts.

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