CN217158547U

CN217158547U - Positive and negative aluminum bars of battery module

Info

Publication number: CN217158547U
Application number: CN202220910774.8U
Authority: CN
Inventors: 童作禄
Original assignee: Dongguan Jinqi Industrial Co ltd
Current assignee: Dongguan Jinqi Industrial Co ltd
Priority date: 2022-04-19
Filing date: 2022-04-19
Publication date: 2022-08-09
Anticipated expiration: 2032-04-19

Abstract

The utility model relates to the technical field of batteries, in particular to a positive and negative aluminum bar of a battery module, which comprises a connecting aluminum bar and a conductive aluminum bar; the conductive aluminum bar comprises a connecting part and two extending ends positioned on two sides of the connecting part, the extending ends are used for being connected with the battery cell, and the connecting part is welded with the connecting aluminum bar; riveting nuts are embedded in the connecting aluminum bars. The utility model discloses simple structure, low in manufacturing cost through connecting the inside pre-buried riveting nut that has of aluminium bar, has avoided because the contact surface unevenness and the deformation that the atress caused are arranged to the aluminium.

Description

Positive and negative aluminum bars of battery module

Technical Field

The utility model relates to a battery technology field indicates a positive negative pole aluminium of battery module row especially.

Background

Due to the advantages of energy conservation, environmental protection and the like, the new energy automobile is developed vigorously at present, and the demand of the new energy automobile is increasing continuously as a main energy source of the new energy automobile. The battery module inside the power lithium battery usually comprises a plurality of electric cores, and the electric cores are connected in series and in parallel through an aluminum bar.

The current aluminum row structure generally consists of three identical first panels, second panels, and third panels, wherein the first panels and the second panels are horizontally juxtaposed, and the third panels are vertically connected to the second panels. And a press riveting screw is arranged on the third panel and is fixed in the battery module in a press riveting mode.

Because the hardness of the positive and negative aluminum bars is very low, the press riveting screw can cause the unevenness of the contact surface of the positive and negative aluminum bars and the deformation of the bent part when being stressed during fixing.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a positive negative pole aluminium of battery module is arranged, simple structure, low in manufacturing cost has avoided because the contact surface unevenness and the deformation that the atress caused are arranged to the aluminium.

In order to achieve the above object, the present invention provides a positive and negative aluminum bar of a battery module, which comprises a connecting aluminum bar and a conductive aluminum bar; the conductive aluminum bar comprises a connecting part and two extending ends positioned on two sides of the connecting part, the extending ends are used for being connected with the battery cell, and the connecting part is welded with the connecting aluminum bar; and riveting nuts are embedded in the connecting aluminum bars.

As a preferred scheme, the top surface of the aluminum row is a first-level step structure, and the first-level step structure comprises an upper plane, a lower plane and a vertical surface connecting the upper plane and the lower plane.

As a preferable scheme, the connecting aluminum bar is provided with a plurality of screw holes at the upper plane position in a penetrating manner, and the riveting nut is pre-embedded in the screw holes.

Preferably, the thickness of the riveting nut is smaller than the length of the screw hole.

Preferably, the connecting portion of the conductive aluminum row is welded to the lower plane.

Preferably, the height of the top surface of the connecting part is lower than or equal to the height of the top surface of the upper plane.

Preferably, the two extending ends and the connecting part are integrally connected to form a C-shaped structure.

Preferably, the single protruding end is connected with the connecting portion and bent to form a zigzag structure.

The beneficial effects of the utility model reside in that:

the utility model has simple structure and low manufacturing cost, and divides the aluminum bar into two parts, the connecting aluminum bar is used for fixing in the battery module, and the conductive aluminum bar is used for connecting with the battery core; before the aluminum bar is connected and the conductive aluminum bar is welded, the riveting nut is embedded in the aluminum bar, so that the unevenness and deformation of the contact surface caused by the stress of the aluminum bar are avoided.

Drawings

Fig. 1 is a schematic structural diagram of the positive and negative aluminum bars of the present invention.

Fig. 2 is a schematic side view of the positive and negative aluminum bars of the present invention.

Fig. 3 is a schematic structural diagram of the aluminum row connector of the present invention.

Fig. 4 is a schematic structural diagram of the conductive aluminum busbar of the present invention.

The reference numbers illustrate: 10-connecting an aluminum row; 11-upper plane; 12-lower plane; 13-vertical plane; 14-screw holes; 20-conductive aluminum bar; 21-a connecting part; 22-an extension end; 30-riveting the nut.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. 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.

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 "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or connected 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.

Referring to fig. 1 and 2, the present invention relates to a positive and negative aluminum bar of a battery module, which includes a connecting aluminum bar 10 and a conductive aluminum bar 20; the conductive aluminum bar 20 comprises a connecting part 21 and two extending ends 22 positioned at two sides of the connecting part 21, the extending ends 22 are used for being connected with the battery core, and the connecting part 21 is welded with the connecting aluminum bar 10; the interior of the aluminum row 10 is embedded with a riveting nut 30.

The utility model has simple structure and low manufacturing cost, and divides the aluminum row into two parts, the connecting aluminum row 10 is used for fixing in the battery module, and the conductive aluminum row 20 is used for connecting with the battery core; before the aluminum bar 10 and the conductive aluminum bar 20 are welded, the riveting nut 30 is embedded in the aluminum bar 10, so that the unevenness and deformation of the contact surface caused by the stress of the aluminum bar are avoided.

As shown in fig. 3, the top surface of the aluminum row 10 is a one-step structure, and the one-step structure includes an upper plane 11, a lower plane 12, and a vertical plane 13 connecting the upper plane 11 and the lower plane 12.

The upper plane 11 is mainly used to fix the aluminum busbar 10 in the battery module, and the aluminum busbar 10 has a plurality of screw holes 14 penetrating through the upper plane 11, in this embodiment, the number of the screw holes 14 is two. The riveting nut 30 is embedded in the screw hole 14, and the thickness of the riveting nut 30 is smaller than the length of the screw hole 14. That is, the pre-embedded clinch nut 30 does not protrude out of the upper plane 11.

The lower plane 12 is mainly used for welding the conductive aluminum row 20, the connecting part 21 of the conductive aluminum row 20 is welded on the lower plane 12, and the top surface height of the connecting part 21 is lower than or equal to the top surface height of the upper plane 11.

As shown in fig. 4, the two protruding ends 22 and the connecting portion 21 are integrally connected to form a C-shaped structure, when the two protruding ends 22 are arranged in a staggered manner, the contact area between the aluminum busbar and the battery cell is large, the overcurrent area is further increased, the overcurrent capacity of the battery is improved, and a large current can be allowed to pass through during the charging and discharging processes of the battery. . Singly stretch out end 22 and connecting portion 21 and be connected the bending and form zigzag structure, singly stretch out end 22 and connecting portion 21 junction through setting up the flexion, when the aluminium bar is connected with electric core, the flexion plays certain spacing effect of location, is convenient for install.

The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by the technical solution of the present invention by those skilled in the art are all within the scope of the present invention as defined by the claims.

Claims

1. The utility model provides a positive negative pole aluminium bar of battery module which characterized in that: comprises a connecting aluminum bar and a conductive aluminum bar; the conductive aluminum bar comprises a connecting part and two extending ends positioned on two sides of the connecting part, the extending ends are used for being connected with the battery cell, and the connecting part is welded with the connecting aluminum bar; and riveting nuts are embedded in the connecting aluminum bars.

2. The positive and negative aluminum bars of a battery module as set forth in claim 1, wherein: the top surface of connecting the aluminium row is one-level stair structure, one-level stair structure includes plane, lower plane and connects go up the plane with the vertical plane of lower plane.

3. The positive and negative aluminum bars of a battery module as set forth in claim 2, wherein: the connecting aluminum bar is provided with a plurality of screw holes in a penetrating manner at the position of the upper plane, and the riveting nut is pre-embedded in the screw holes.

4. The positive and negative aluminum bars of a battery module as set forth in claim 3, wherein: the thickness of the riveting nut is smaller than the length of the screw hole.

5. The positive and negative aluminum bars of a battery module as set forth in claim 2, wherein: and the connecting part of the conductive aluminum bar is welded on the lower plane.

6. The positive and negative aluminum bars of a battery module as set forth in claim 5, wherein: the top surface height of the connecting part is lower than or equal to the top surface height of the upper plane.

7. The positive and negative aluminum bars of a battery module as set forth in claim 1, wherein: the two extending ends and the connecting part are integrally connected to form a C-shaped structure.

8. The positive and negative aluminum bars of a battery module as set forth in claim 7, wherein: and the single extending end is connected with the connecting part and bent to form a Z-shaped structure.