CN214203879U

CN214203879U - Bottom plate structure and battery box

Info

Publication number: CN214203879U
Application number: CN202120382801.4U
Authority: CN
Inventors: 何亚飞
Original assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Current assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Priority date: 2021-02-20
Filing date: 2021-02-20
Publication date: 2021-09-14
Anticipated expiration: 2031-02-20

Abstract

The utility model relates to a battery field discloses a floor structure and battery box, and this floor structure includes and lays and link to each other the bottom plate that forms by a plurality of section bars along the first direction level in proper order, and locates the crossbeam at bottom plate second direction both ends, still including being located the connecting piece between crossbeam and the section bar, the both ends of section bar second direction all are equipped with the slot, the one end of connecting piece with the slot peg graft and with the section bar welding, the other end and rather than adjacent crossbeam welding. The utility model discloses having add the connecting piece, can effectively having reduced the machining precision requirement to the slot size, neither can make slot on the bottom plate and the connecting piece peg graft back slot and the connecting piece between the clearance too big, can not lead to the slot to warp yet, at connecting piece and crossbeam and section bar welded in-process, guarantee in crossbeam, connecting piece and the bottom plate link to each other both effectively laminating, reduce the deflection after the welding simultaneously. The utility model also provides a battery box, including foretell bottom plate structure.

Description

Bottom plate structure and battery box

Technical Field

The utility model relates to a battery field especially relates to a bottom plate structure and battery box.

Background

The bottom plate of the battery box body is formed by splicing a plurality of sectional materials, and the bottom plate formed by splicing the sectional materials is connected to a cross beam. Specifically, a long-strip-shaped boss is arranged on the cross beam, a slot is arranged on each section, each slot is connected with the boss in an inserting mode, and then the inserting positions of the slots and the bosses are welded.

Because the bottom plate is formed by splicing a plurality of sectional materials, if the gaps between the bosses and different slots are different, the subsequent welding quality can be influenced when the gaps are larger, and the deformation of the bottom plate can be easily caused when the gaps are smaller. The processing difficulty is large and the cost is high. Therefore, in order to ensure the gap size when each slot is inserted into the boss, the requirements on the size precision of the slots on different sectional materials are high, the processing difficulty is high, and the cost is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a floor structure and battery box can reduce the size precision to the slot on the different concatenation bottom plates.

To achieve the purpose, the utility model adopts the following technical proposal:

a bottom plate structure comprises a bottom plate and cross beams, wherein the bottom plate is formed by sequentially and horizontally laying and connecting a plurality of sectional materials along a first direction, the cross beams are arranged at two ends of the bottom plate in a second direction, the first direction is the width direction of the sectional materials, and the second direction is the length direction of the sectional materials; still including being located the crossbeam with connecting piece between the section bar, the both ends of section bar second direction all are equipped with the slot, the one end of connecting piece with the slot peg graft and with the section bar welding, the other end with rather than adjacent the crossbeam welding.

As an optimal technical scheme of the above bottom plate structure, the connecting piece includes connecting portions corresponding to the profiles one to one, one end of each connecting portion is inserted into the corresponding slot on the profile and welded to the profile, and the other end is welded to the cross beam.

As a preferable embodiment of the above-described floor structure, a plurality of the connecting portions are integrally formed.

As a preferable technical solution of the above-mentioned bottom plate structure, a plurality of the connecting parts are separately arranged and connected in sequence.

As a preferable technical scheme of the bottom plate structure, the two connecting parts are connected in a welding manner.

As an optimal technical scheme of the above bottom plate structure, the connecting portion includes an insertion block inserted into the insertion slot, and a welding plate clamped between the profile and the cross beam and welded to the cross beam and the profile, and the insertion block is connected to the welding plate.

As a preferable technical solution of the above-mentioned bottom plate structure, an upper surface of the welding plate is flush with an upper surface of the profile, and a lower surface of the welding plate is not higher than the lower surface of the profile.

As a preferable technical solution of the above-mentioned bottom plate structure, an upper surface of the cross beam near one end of the welding plate is flush with an upper surface of the welding plate.

As a preferable technical solution of the above floor structure, the connecting member and the cross beam are welded by friction stir welding, and/or the connecting member and the floor are welded by friction stir welding.

The utility model also provides a battery box, including foretell bottom plate structure.

The utility model has the advantages that: the utility model discloses having add the connecting piece, can effectively having reduced the machining precision requirement to the slot size, neither can make slot on the bottom plate and the connecting piece peg graft back slot and the connecting piece between the clearance too big, can not lead to the slot to warp yet, at connecting piece and crossbeam and section bar welded in-process, guarantee in crossbeam, connecting piece and the bottom plate link to each other both effectively laminating, reduce the deflection after the welding simultaneously.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and 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 the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a side view of a battery case provided in an embodiment of the present invention;

fig. 2 is an exploded view of a battery box according to an embodiment of the present invention.

In the figure:

1. a base plate; 11. a section bar; 111. a slot;

2. a cross beam;

3. a connecting member; 31. inserting a block; 32. and (6) welding the plate.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

As shown in fig. 1 and fig. 2, the present embodiment provides a bottom plate structure, which includes a bottom plate 1 formed by sequentially and horizontally laying and connecting a plurality of sectional materials 11 along a first direction, cross beams 2 disposed at two ends of the bottom plate 1 in a second direction, and connecting members 3 disposed between the cross beams 2 and the sectional materials 11, wherein two ends of the sectional materials 11 in the second direction are respectively provided with an insertion slot 111, one end of each connecting member 3 is inserted into the insertion slot 111 and welded to the corresponding sectional material 11, and the other end is welded to the cross beam 2 adjacent to the connecting member; the first direction is the width direction of the profile 11 and the second direction is the length direction of the profile 11. The section bar 1 in this embodiment is made of an aluminum section bar, the first direction is a W direction shown in fig. 2, and the second direction is an L direction shown in fig. 2.

Connecting piece 3 has been add to this embodiment, can effectively reduce the machining precision requirement to slot 111 size through addding connecting piece 3, neither can make slot 111 on the bottom plate 1 and connecting piece 3 peg graft the back, the clearance between slot 111 and the connecting piece 3 is too big, also can not lead to slot 111 to warp, guarantee connecting piece 3 and crossbeam 2 simultaneously, section bar 11 welded in-process, guarantee crossbeam 2, link to each other in connecting piece 3 and the bottom plate 1 and effectively laminate between them, reduce the deflection after the welding.

Specifically, the connecting pieces 3 include connecting portions corresponding to the profiles 11 one to one, and one end of each connecting portion is inserted into the insertion groove 111 and welded to the corresponding profile 11, and the other end is welded to the cross beam 2. Preferably, the plurality of connection parts are integrally formed to simplify a process.

In this embodiment, each of the profiles 11 is provided with a slot 111, and the slot 111 penetrates through two opposite side surfaces of the profile 11 along a first direction.

In other embodiments, the connecting portions may be separately and sequentially connected. Preferably, the two connections are joined by friction stir welding. In other embodiments, at least two adjacent connecting portions may be integrally formed to form one connecting member 3, and a plurality of connecting members 3 may be provided.

Further, the connecting portion includes an insertion block 31 inserted into the insertion groove 111, and a welding plate 32 interposed between the profile 11 and the cross beam 2 and welded to both the cross beam 2 and the profile 11, and the insertion block 31 is connected to the welding plate 32. Preferably, the upper surface of the welding plate 32 is flush with the upper surface of the profile 11, the lower surface of the welding plate 32 is not higher than the lower surface of the profile 11, and the upper surface of the end of the beam 2 close to the welding plate 32 is flush with the upper surface of the welding plate 32.

Further, the connecting piece 3 and the cross beam 2 are welded through friction stir welding, and the connecting piece 3 and the bottom plate 1 are welded through friction stir welding. Specifically, in the welding, both upper and lower surfaces of the connecting member 3 are welded to the cross beam 2, and both upper and lower surfaces of the connecting member 3 are welded to the welding plate 32.

The embodiment also provides a battery box body which comprises the bottom plate structure.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims

1. A bottom plate structure comprises a bottom plate (1) and cross beams (2), wherein the bottom plate (1) is formed by sequentially and horizontally laying and connecting a plurality of sectional materials (11) along a first direction, the cross beams (2) are arranged at two ends of the bottom plate (1) in a second direction, the first direction is the width direction of the sectional materials (11), and the second direction is the length direction of the sectional materials (11); the novel welding rod is characterized by further comprising a connecting piece (3) located between the cross beam (2) and the sectional materials (11), slots (111) are formed in two ends of the sectional materials (11) in the second direction, one end of the connecting piece (3) is connected with the slots (111) in an inserting mode and welded with the sectional materials (11), and the other end of the connecting piece is welded with the cross beam (2) adjacent to the other end of the connecting piece.

2. A floor structure according to claim 1, characterised in that the connectors (3) comprise connections corresponding one-to-one to the profiles (11), each of which has one end plugged into the corresponding slot (111) in the profile (11) and welded to the profile (11) and the other end welded to the cross-beam (2).

3. The floor structure of claim 2, wherein a plurality of said connecting portions are integrally formed.

4. The floor structure according to claim 2, wherein a plurality of the connecting portions are provided separately and connected in series.

5. The floor structure of claim 4, wherein two of said connecting portions are joined by welding.

6. The floor structure according to claim 2, characterized in that said connection portion comprises an insert block (31) inserted into said slot (111) and a welding plate (32) interposed between said section bar (11) and said cross beam (2) and welded to both said cross beam (2) and said section bar (11), said insert block (31) being connected to said welding plate (32).

7. Floor structure according to claim 6, characterized in that the upper surface of said welding plate (32) is flush with the upper surface of said profile (11), the lower surface of said welding plate (32) being no higher than the lower surface of said profile (11).

8. Floor structure according to claim 6, characterized in that the upper surface of the cross beam (2) near one end of the welded plate (32) is flush with the upper surface of the welded plate (32).

9. Floor structure according to any of claims 1 to 8, characterised in that the connecting pieces (3) are welded to the cross beams (2) by friction stir welding and/or that the connecting pieces (3) are welded to the floor (1) by friction stir welding.

10. A battery case characterized by comprising the floor structure of any one of claims 1 to 9.