CN206639856U - Bus bars and battery packs for battery packs - Google Patents

Abstract

The utility model discloses a battery package that is used for busbar of battery package and has this busbar, the busbar of battery package includes: a metal busbar body and a metal spring leaf. The elastic reed is provided with a bus bar fixing end and a battery fixing end, the bus bar fixing end is fixed on the bus bar body, the battery fixing end elastically supports against an electrode of the battery, and the battery fixing end is fixed with the corresponding electrode. The resistance value is reduced by arranging the metal elastic spring, the maximum passable current intensity is enhanced, the installation process of the bus bar and the battery monomer is simplified, the tensile strength and the stability are improved, and the reliability is higher.

Description

Bus bars and battery packs for battery packs

technical field

The utility model belongs to the technical field of vehicle manufacturing, and in particular relates to a bus bar for a battery pack and a battery pack.

Background technique

With the development of electric vehicles, battery packs, as the core key components of electric vehicles, have higher and higher safety requirements. The bus bars of ordinary battery packs are generally connected with aluminum wires. During use, vibration fatigue is prone to cause the aluminum wires to break and cause short-circuiting of the battery. In severe cases, it may even explode, causing major safety accidents, and there is room for improvement.

Contents of the invention

The utility model aims at at least solving one of the technical problems existing in the prior art. For this reason, the utility model proposes a busbar for a battery pack, and the busbar is more reliably connected to the battery cells.

The utility model also proposes a battery pack with the bus bar.

The bus bar for the battery pack according to the embodiment of the present invention includes: a metal bus bar body and a metal elastic reed, the elastic reed has a bus bar fixed end and a battery fixed end, and the bus bar fixed end Fixed on the bus bar body, the battery fixing end elastically presses against the electrodes of the battery, and the battery fixing end is fixed to the corresponding electrodes.

According to the bus bar of the battery pack according to the embodiment of the utility model, the resistance value is reduced by arranging metal elastic reeds, the maximum current intensity that can pass through is enhanced, and the installation process of the bus bar and the battery cell is simplified to improve its reliability. .

According to an embodiment of the bus bar for a battery pack of the present invention, the bus bar body is provided with a mounting groove, and the fixed end of the bus bar is fixed in the mounting groove.

According to a bus bar for a battery pack according to an embodiment of the present invention, the installation groove is opened on the outer surface of the bus bar body facing away from the battery.

According to an embodiment of the bus bar for a battery pack of the present invention, an insulating plate for covering the installation groove is further provided on the outer surface of the bus bar body.

According to an embodiment of the bus bar for a battery pack of the present invention, the fixed end of the bus bar is sheet-shaped, and the installation groove is a sheet-shaped installation groove.

According to an embodiment of the bus bar for a battery pack of the present invention, the fixed end of the bus bar and the installation groove are both rectangular.

According to a bus bar for a battery pack according to an embodiment of the present invention, the installation groove has a depth of 2 mm and a cross-sectional area of 25 mm ² .

According to a bus bar for a battery pack according to an embodiment of the present invention, the fixed end of the bus bar and the fixed end of the battery are both configured in a sheet shape.

According to the bus bar for a battery pack according to an embodiment of the present invention, the elastic reed further has an inclined connection section connected between the fixed end of the bus bar and the fixed end of the battery.

A battery pack according to another aspect of the present invention includes the above-mentioned bus bar.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a side view of a bus bar of a battery pack according to an embodiment of the present invention;

Fig. 2 is a schematic structural diagram of a bus bar of a battery pack according to an embodiment of the present invention.

Reference signs:

The bus bar 100 of the battery pack, the bus bar body 1 , the elastic reed 2 , the bus bar fixed end 21 , the battery fixed end 22 , the installation groove 11 , the insulating plate 3 , and the inclined connection section 23 .

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer" and the like are based on the orientation or positional relationship shown in the drawings, and are only for It is convenient to describe the present invention and simplify the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

The bus bar 100 of the battery pack according to the embodiment of the present invention will be described below with reference to FIG. 1 and FIG. 2 .

The bus bar 100 for a battery pack according to an embodiment of the present invention may include: a metal bus bar body 1 and a metal elastic reed 2 .

As shown in Figure 2, the elastic reed 2 has a bus bar fixed end 21 and a battery fixed end 22, the bus bar fixed end 21 is fixed on the bus bar body 1, the battery fixed end 22 is elastically pressed against the electrode of the battery, and the battery is fixed Ends 22 are secured to corresponding electrodes.

According to the bus bar 100 of the battery pack in the embodiment of the present invention, the resistance value is reduced by setting the metal elastic reed 2, the maximum current intensity that can pass is enhanced, and the bus bar 100 of the battery pack and the battery cell are simplified. The installation process improves its reliability. At the same time, the elastic reed 2 elastically presses and fits with the battery cell, and increases the fixing area.

Referring to FIG. 2 , the busbar body 1 is provided with an installation groove 11 , and the busbar fixed end 21 is fixed in the installation groove 11 . The setting of the mounting groove 11 facilitates the welding of the bus bar fixed end 21 and the bus bar body 1 and the mounting groove 11 has a certain protective effect on the welding point, preventing the welding point from rubbing against external objects and causing the welding point to break.

The installation slot 11 is opened on the outer surface of the bus bar body 1 facing away from the battery. Such arrangement is beneficial to the welding of the fixed end 21 of the bus bar and the main body 1 of the bus bar and can protect the battery cells and avoid short-circuit damage of the battery cells.

According to some embodiments of the present invention, an insulating plate 3 for covering the installation groove 11 is also provided on the outer surface of the bus bar body 1 . The insulating plate 3 can prevent the power loss caused by the conduction between the bus bar and the outside world and can ensure the safety of the battery module.

Referring to FIG. 1 and FIG. 2 , the fixed end 21 of the bus bar is in the shape of a sheet, and the installation groove 11 is a sheet-shaped installation groove 11 . The fixed end 21 of the bus bar is arranged in a sheet shape, which takes up little space and is convenient for welding and installing the fixed end 21 of the bus bar and the installation groove 11 .

Both the fixed end 21 of the bus bar and the installation groove 11 are rectangular. The installation groove 11 is configured as a rectangle to facilitate the installation of the battery cells. The fixed end 21 of the bus bar is configured as a rectangle to facilitate the welding and fixing of the fixed end 21 of the bus bar and the installation groove 11 .

According to some embodiments of the present invention, the installation groove 11 has a depth of 2 mm and a cross-sectional area of 25 mm ² .

As shown in FIG. 2 , both the bus bar fixing end 21 and the battery fixing end 22 are configured in a sheet shape.

The elastic reed 2 also has an inclined connection section 23 connected between the fixed end 21 of the bus bar and the fixed end 22 of the battery. The inclined connection section 23 is used to connect the fixed end 21 of the bus bar and the fixed end 22 of the battery to form an elastic gasket of an elastic structure. The elastic gasket can better contact and conduct electricity with the battery cell.

In general, according to the busbar 100 of the battery pack in some preferred embodiments of the present invention, the resistance value is reduced by setting the metal elastic reed 2, the maximum current intensity that can pass through is enhanced, and the busbar 100 of the battery pack is simplified. The installation process with the battery cell improves the tensile strength and stability, making it more reliable.

In addition, the battery pack according to another embodiment of the present utility model includes the bus bar 100 of the battery pack described in the above embodiments. Other configurations of the battery pack are prior art and well known to those skilled in the art, so other configurations of the battery pack will not be described in detail here.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific examples," or "some examples" is intended to mean that the implementation A specific feature, structure, material, or characteristic described by an embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the invention is defined by the claims and their equivalents.

Claims (10)

1. A kind of 1. bus-bar for battery bag, it is characterised in that including：

   The bus-bar body of metal；

   The elastic spring of metal, the elastic spring have bus-bar fixing end and battery fixing end, the bus-bar fixing end Be fixed on the bus-bar body, the battery fixing end flexibly compresses the electrode of battery, and the battery fixing end with The corresponding electrode is fixed.
2. 2. the bus-bar according to claim 1 for battery bag, it is characterised in that offered on the bus-bar body Mounting groove, the bus-bar fixing end are fixed in the mounting groove.
3. 3. the bus-bar according to claim 2 for battery bag, it is characterised in that the mounting groove is opened in the remittance Stream row body on the outer surface of battery.
4. 4. the bus-bar according to claim 3 for battery bag, it is characterised in that the outer surface of the bus-bar body On be additionally provided with insulation board for covering the mounting groove.
5. 5. the bus-bar according to claim 2 for battery bag, it is characterised in that the bus-bar fixing end is piece Shape, the mounting groove are sheet mounting groove.
6. 6. the bus-bar according to claim 5 for battery bag, it is characterised in that the bus-bar fixing end and described Mounting groove is rectangle.
7. 7. the bus-bar according to claim 5 for battery bag, it is characterised in that the depth of the mounting groove is 2mm, And sectional area is 25mm²。
8. 8. the bus-bar according to claim 1 for battery bag, it is characterised in that the bus-bar fixing end and described Battery fixing end is configured to sheet.
9. 9. the bus-bar according to claim 8 for battery bag, it is characterised in that the elastic spring also has connection Inclination linkage section between the bus-bar fixing end and the battery fixing end.
10. 10. a kind of battery bag, it is characterised in that including the remittance for battery bag according to any one of claim 1-9 Stream row.