CN215070273U

CN215070273U - Boundary beam

Info

Publication number: CN215070273U
Application number: CN202121651064.XU
Authority: CN
Inventors: 晏培杰
Original assignee: Suzhou Yichuangte Intelligent Manufacturing Co ltd
Current assignee: Suzhou Yichuangte Intelligent Manufacturing Co ltd
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2021-12-07
Anticipated expiration: 2031-07-20

Abstract

The utility model discloses a boundary beam, the boundary beam is used for the concatenation to form battery package frame, the boundary beam includes: the first profile is provided with a first side face and a second side face which are opposite, and the first side face is used for forming the outer contour of the battery pack frame; the second section bar and the first section bar are arranged in parallel, the second section bar is positioned on one side opposite to the second side surface, and adjacent section bars are connected through opposite side surfaces. The boundary beam can be freely combined, the requirements of different battery pack frames on different strengths are met, materials are saved, and the production cost is reduced.

Description

Boundary beam

Technical Field

The utility model relates to a battery package field especially relates to a boundary beam.

Background

The battery pack of the electric automobile is one of core technologies of the electric automobile, and the safety of the battery pack directly affects the overall performance and the driving safety of the electric automobile. The battery pack mainly comprises a battery pack frame, a cover plate, a water cooling plate, a protection plate and a battery module, wherein the cover plate is connected with the battery pack frame, and the battery module is arranged in the frame. Different styles of electric automobiles have different requirements on the shape, strength and the like of the battery pack. The outer frame of current battery package is formed by a plurality of aluminium alloy concatenations, and to the battery package of different styles, need redesign the structure of aluminium alloy according to the change of battery package shape, to change that intensity required etc. for a long time, with high costs, be unfavorable for enterprise's development.

Disclosure of Invention

In order to overcome the defect among the prior art, the embodiment of the utility model provides a boundary beam, this boundary beam can the independent assortment, satisfies different battery package frames to the demand of different intensity, material saving, reduction in production cost.

In order to achieve the above purpose, the utility model adopts the technical scheme that: an edge beam for splicing to form a battery pack frame, the edge beam comprising:

the first profile is provided with a first side face and a second side face which are opposite, and the first side face is used for forming the outer contour of the battery pack frame;

the second section bar and the first section bar are arranged in parallel, the second section bar is positioned on one side opposite to the second side surface, and adjacent section bars are connected through opposite side surfaces.

In the technical scheme, the adjacent sectional materials are in contact connection through opposite side surfaces or are connected through a connecting piece.

In the above technical scheme, at least one of the first section bar and the second section bar is formed by rolling a steel plate.

In the technical scheme, the first profile and the second profile are formed by rolling steel plates, and the first profile is connected with the second profile through welding.

In the above technical scheme, the first profile and the second profile are internally provided with cavity structures.

In the above technical scheme, a connecting block for connecting the first section bar and the second section bar is arranged in the cavity structure.

In the technical scheme, the top of the edge beam forms a step structure, and a plurality of step surfaces of the step structure are arranged along the direction from the first section bar to the second section bar and are sequentially reduced in the vertical direction.

In the above technical solution, the first section bar includes a first step surface and a second step surface arranged between the first side surface and the second side surface, the first step surface is higher than the second step surface, and the top surface of the second section bar is flush with the second step surface.

In the technical scheme, the bottom of the boundary beam is provided with a limiting part for placing the sealing strip.

In the above technical scheme, a plurality of riveting holes are arranged on the upper side and the lower side of the first section bar and the second section bar and are used for connecting with the cover plate of the battery pack frame.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

1. the utility model discloses well boundary beam includes first section bar, second section bar, and accessible adjustment wherein arbitrary material, structure etc. change the boundary beam, shorten the cycle of boundary beam design, production, practice thrift the cost, satisfy the combination demand of different battery package frames.

2. The first section and the second section are formed by rolling the steel plate, so that the production cost is reduced, and the first section and the second section which are formed by rolling the steel plate can be directly connected through welding, so that the processing is convenient.

3. Cavities are formed in the first section bar and the second section bar, so that the connecting blocks can be arranged to connect the first section bar and the second section bar, the side beams can be lightened, and the energy consumption of vehicles is reduced.

4. The top of the boundary beam is provided with a step structure, a plurality of step surfaces of the step structure are arranged along the direction from the first section bar to the second section bar and are sequentially reduced in the vertical direction, so that a preset space is formed between the top of the first section bar and the top of the second section bar, and the step structure can be used for arranging lines among the battery modules.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a side sill according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a first profile according to a first embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a second profile according to an embodiment of the present invention;

fig. 4 is a schematic cross-sectional view of a boundary beam in the second embodiment of the present invention.

Reference numerals of the above figures: 1. a first profile; 11. a first side surface; 12. a second side surface; 13. a first step surface; 14. a second step surface; 15. a limiting part; 2. a second profile; 3. a cavity structure; 4. riveting holes; 5. a notch; 6. an electrical box; 7. a connecting member.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The first embodiment is as follows: referring to fig. 1-3, an edge beam for splicing to form a battery pack frame comprises:

the first section bar 1 is provided with a first side face 11 and a second side face 12 which are opposite, and the first side face 11 is used for forming the outer contour of the battery pack frame;

at least one second section bar 2, the second section bar 2 and the first section bar 1 are arranged in parallel, the second section bar 2 is positioned on one side opposite to the second side surface 12, and adjacent section bars are connected through opposite side surfaces.

The boundary beam is formed by connecting the first section bar 1 and the second section bar 2, when the shape and the strength of the boundary beam are required to be changed, the part which does not need to be changed can be reserved by changing the material and the structure of any one of the first section bar 1 and the second section bar 2, so that the design and the production period of the boundary beam are shortened, the cost is saved, and the combination requirements of different battery pack frames are met. And the first section bar 1 is connected with the second section bar 2, which is favorable for transferring the thermal expansion force of the battery module in the battery pack frame

Wherein, the second section bar 2 can be one or more. When a plurality of said second profiles 2 are included, a plurality of said second profiles 2 can be connected side by side. The first section bar 1 and the second section bar 2 are arranged in sequence, and two adjacent section bars are in contact connection through opposite side surfaces, for example, the opposite side surfaces of the adjacent section bars can be in contact through a welding mode or a connecting block mode.

The first section bar 1 and the second section bar 2 can be made of the same metal material, such as aluminum material or steel material. The first section bar 1 and the second section bar 2 can also be made of different metal materials, such as the first section bar 1 is made of steel and the second section bar 2 is made of aluminum. Preferably, at least one of the first profile 1 and the second profile 2 is roll-formed from a steel sheet. Further preferably, the first profile 1 and the second profile 2 are both formed by rolling a steel plate. The steel plate can be made of high-strength steel with the grade of more than 800 MPa. Compared with aluminum product extrusion molding, the first section bar 1 and the second section bar 2 are both formed by rolling steel plates, so that the processing technology is simplified, the production cost is reduced, and the strength of the side beam is improved. When the first profile 1 and the second profile 2 are both formed by rolling a steel plate, the first profile 1 and the second profile 2 can be connected by welding.

In order to reduce the weight of the edge beam and thus reduce the energy consumption of the vehicle, a cavity structure 3 may be provided in the first profile 1 and the second profile 2. If the first section bar 1 and the second section bar 2 are rolled to form a shape like a Chinese character 'ri', reinforcing ribs are simultaneously formed in the cavity structure 3 under the condition of meeting the requirement of weight reduction, so that the strength of the section bars is ensured.

The design of the cavity structure 3 not only enables weight reduction, but also can be used for connecting the first profile 1 and the second profile 2. And simultaneously arranging a connecting block in the cavity structure 3 of the first section bar 1 and the cavity structure 3 of the second section bar 2, and connecting the connecting block with the section bars by using bolts and the like, thereby realizing the connection of the first section bar 1 and the second section bar 2. Such as the above-mentioned connection means, for example, for the first profile 1, the second profile 2 made of aluminium section.

The top of the edge beam may include a plurality of step surfaces, wherein the step surface located at the outermost side facing the first side surface 11 is the highest, and the step surface located at the innermost side facing away from the first side surface 11 is lower than the step surface at the outermost side. Preferably, as shown in fig. 1, the top of the edge beam forms a step structure, and a plurality of step surfaces of the step structure are arranged along the direction from the first section bar 1 to the second section bar 2 and are sequentially lowered in the vertical direction. Specifically, the first profile 1 includes a first step surface 13 and a second step surface 14 which are arranged between the first side surface 11 and the second side surface 12, the first step surface 13 is higher than the second step surface 14, and the top surface of the second profile 2 is flush with the second step surface 14. The top of boundary beam sets up the stair structure, the stair structure is a plurality of the step face is arranged and is reduced in vertical direction along the direction of first section bar 1 to second section bar 2, makes the top of first section bar 1 with form a predetermined space between the top of second section bar 2, can be used to arranging of circuit between the battery module.

And a plurality of riveting holes 4 are formed in the upper side and the lower side of the first section bar 1 and the second section bar 2 and are used for being connected with a cover plate of the battery pack frame. In order to ensure that the edge beam can be connected with the cover plate of the battery pack frame in a sealing manner, a limiting part 15 for placing a sealing strip is arranged at the bottom of the edge beam.

Referring to fig. 2, a notch 5 is formed in the edge beam, and an electrical box 6 for placing electronic components connected with the battery module is embedded in the notch 5.

Example two: referring to fig. 4, a side sill is substantially similar to the side sill structure of the first embodiment except that: the opposite side surfaces of the first profile 1 and the second profile 2 are connected through a connecting piece 7.

Specifically, the second side surface 12 of the first profile 1 is not directly contacted with the second profile 2, and the connecting piece 7 is arranged between the first profile and the second profile 2, so that two opposite sides of the connecting piece 7 are respectively connected with the first profile 1 and the second profile 2. Through selecting for use have different width connecting piece 7, adjustable first section bar 1 with interval between second section bar 2 is more nimble changeable.

When the second step surface 14 is lower than the top surface of the second profile 2 and the width of the second step surface 14 is smaller, the welding gun does not conveniently extend into the inner side of the welding gun to realize the connection between the second step surface and the second profile, and the effective connection between the second step surface and the second profile can be ensured by the connecting piece 7.

Specifically, the connecting member 7 may be in a shape of a Chinese character 'ji', and is disposed between the first profile 1 and the second profile 2 after rotating 90 degrees.

The present invention has been explained by using specific embodiments, and the explanation of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims

1. An edge beam for splicing to form a battery pack frame, the edge beam comprising:

2. The sill of claim 1, wherein: the adjacent profiles are connected by opposite side faces in contact or by connecting pieces.

3. The sill of claim 1, wherein: at least one of the first section bar and the second section bar is formed by rolling a steel plate.

4. The sill of claim 2, wherein: the first section and the second section are formed by rolling steel plates, and the first section is connected with the second section through welding.

5. The sill of claim 1, wherein: the first section bar and the second section bar are internally provided with cavity structures.

6. The sill of claim 5, wherein: and a connecting block for connecting the first section bar and the second section bar is arranged in the cavity structure.

7. The sill of claim 1, wherein: the top of the boundary beam forms a step structure, and a plurality of step surfaces of the step structure are arranged along the direction from the first section bar to the second section bar and are sequentially reduced in the vertical direction.

8. The sill of claim 7, wherein: the first section comprises a first step surface and a second step surface which are arranged between the first side surface and the second side surface, the first step surface is higher than the second step surface, and the top surface of the second section is flush with the second step surface.

9. The sill of claim 1, wherein: and the bottom of the edge beam is provided with a limiting part for placing a sealing strip.

10. The sill of claim 1, wherein: and a plurality of riveting holes are formed in the upper sides and the lower sides of the first section bar and the second section bar and are used for being connected with a cover plate of the battery pack frame.