CN211907566U

CN211907566U - Copper-aluminum transition bar for electrical connection of copper-aluminum electrode

Info

Publication number: CN211907566U
Application number: CN201922038461.9U
Authority: CN
Inventors: 龚秀军; 章静
Original assignee: Taizhou Tianke Power System Co ltd
Current assignee: Taizhou Tianke Power System Co ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-11-10
Anticipated expiration: 2029-11-22

Abstract

The utility model discloses a copper aluminium transition row for copper aluminium electrode electricity is connected is transversely put side by copper thin slice, aluminium thin slice, and close tip overlaps, welded connection forms. According to a preferred scheme, the copper sheet and the aluminum sheet are straight plates, and the close ends of the copper sheet and the aluminum sheet are overlapped and welded to form a stepped structure; the further improvement of the preferred scheme is that the copper sheet and the aluminum sheet are longitudinally bent into a circular arc shape; in another preferred scheme, the close end parts of the copper sheet and the aluminum sheet are respectively and longitudinally bent to the same side to form an L shape, and the bent L-shaped outer end faces of the copper sheet and the aluminum sheet are overlapped and welded; the preferable scheme is further improved in that opposite ends of the copper thin sheet and the aluminum thin sheet are longitudinally bent into a U shape in the same bending direction of the adjacent ends. The utility model discloses the structure is simplified, low in manufacturing cost, but transships the heavy current, has less connection internal resistance.

Description

Copper-aluminum transition bar for electrical connection of copper-aluminum electrode

Technical Field

The utility model relates to a lithium cell technical field, concretely relates to transition row that is used for lithium cell electrode electricity to connect.

Background

With the development of battery technology, especially lithium ion batteries, battery packs composed of single lithium batteries are used as power supplies, both as power batteries and energy storage batteries, and have been widely used in the fields of electric vehicles, energy storage power stations, and the like. The anode of the single lithium battery is an aluminum sheet, and the cathode of the single lithium battery is a copper sheet. The single lithium batteries need to be connected in series to form a battery pack. The existing lithium battery pack is formed by stacking and connecting more than two single lithium batteries in series, and the connection mode of the aluminum electrode and the copper electrode of the adjacent single lithium batteries is mainly as follows: be equipped with aluminium connector, copper connector at aluminium electrode, copper electrode, aluminium electrode and aluminium connector welded connection, copper electrode and copper connector welded connection, connect aluminium connector, copper connector again, the main defect of this kind of mode lies in: the structure is complicated, the manufacturing cost is high, the internal resistance of the joint is large, and the overload large current is difficult to realize.

Disclosure of Invention

The utility model discloses to prior art's not enough, provide a structure simplification, low in manufacturing cost can transship the heavy current, has less copper aluminium transition row that is used for copper aluminium electrode electricity to connect of connecting the internal resistance.

The utility model discloses a technical goal is realized to following technical scheme.

The utility model provides a copper aluminium transition row for copper aluminium electrode electricity connects which improves and lies in: the copper sheet and the aluminum sheet are horizontally arranged side by side, and the adjacent end parts are overlapped and welded to form the copper sheet and the aluminum sheet.

According to a preferable scheme, the copper sheet and the aluminum sheet are both straight plates, and the close ends of the copper sheet and the aluminum sheet are overlapped and welded to form a step structure.

In a further development of this preferred embodiment, the copper and aluminum foils are bent in the longitudinal direction into a circular arc.

In another preferred scheme, the close end parts of the copper sheet and the aluminum sheet are respectively and longitudinally bent to the same side to form an L shape, and the bent L-shaped outer end faces of the copper sheet and the aluminum sheet are overlapped and welded to be connected.

The preferable scheme is further improved in that the opposite ends of the copper sheet and the aluminum sheet are longitudinally bent into a U shape in the same bending direction of the adjacent ends.

Compared with the prior art, the utility model, following positive effect has:

1. by copper sheet, aluminium foil horizontal flat side by side, close tip overlap, welded connection forms copper aluminium transition row, during the use, copper electrode, the aluminium electrode of adjacent monomer lithium cell respectively with the utility model discloses a copper sheet, aluminium foil welded connection just can be with realizing the connection of adjacent monomer lithium cell copper electrode, aluminium electrode, and like this, the structure is simplified, is showing and is reducing manufacturing cost, but transships the heavy current, is showing and is reducing and connect the internal resistance.

2. Various shapes are arranged, and different use requirements are met.

Drawings

Fig. 1 is a schematic diagram of an initial structure of a usage form (embodiment 1) of the present invention.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a schematic diagram showing an initial structure of another use form (embodiment 2) of the present invention.

Fig. 4 is a left side view of fig. 3.

Fig. 5 is a top view of fig. 3.

Fig. 6 is a schematic structural diagram of a use form (embodiment 1) of the present invention.

Fig. 7 is a left side view of fig. 6.

Fig. 8 is a sectional view taken along line a-a of fig. 6.

Fig. 9 is a schematic structural view of another use form (embodiment 2) of the present invention.

Fig. 10 is a top view of fig. 9.

Fig. 11 is a left side view of fig. 9.

Fig. 12 is a sectional view taken along line B-B in fig. 9.

Detailed Description

The invention will be further explained with reference to the following embodiments according to the attached drawings.

Example 1:

the copper-aluminum transition bar for the electrical connection of copper-aluminum electrodes shown in the attached figures 1, 2, 6, 7 and 8 is composed of a copper sheet 1 and an aluminum sheet 2, wherein the copper sheet 1 and the aluminum sheet 2 are straight plates and are horizontally arranged side by side, the close ends of the copper sheet 1 and the aluminum sheet 2 are overlapped and welded (the shape of a welding spot 3 is circular but not limited to circular) to form a stepped structure, and on the basis, the copper sheet 1 and the aluminum sheet 2 are longitudinally bent into an arc shape.

Example 2:

the copper-aluminum transition bar for electrical connection of copper-aluminum electrodes shown in the attached figures 3, 4, 5, 9, 10, 11 and 12 is composed of a copper sheet 1 and an aluminum sheet 2, wherein the copper sheet 1 and the aluminum sheet 2 are straight plates and are horizontally arranged side by side, the close end parts of the copper sheet 1 and the aluminum sheet 2 are respectively and longitudinally bent towards the same side to form an L shape, and the bent L-shaped outer end surfaces of the copper sheet 1 and the aluminum sheet 2 are overlapped and welded (the welding spot 3 is circular but not limited to circular); the opposite ends of the copper sheet 1 and the aluminum sheet 2 are longitudinally bent into a U shape in the same bending direction of the adjacent ends.

Claims

1. A copper-aluminum transition bar for electrical connection of copper-aluminum electrodes is formed by horizontally arranging a copper sheet (1) and an aluminum sheet (2) side by side, overlapping and welding the adjacent end parts; the method is characterized in that: the end parts of the copper sheet (1) and the aluminum sheet (2) which are close to each other are respectively bent to the same side longitudinally to form an L shape, and the end surfaces of the bent L-shaped outer sides of the copper sheet (1) and the aluminum sheet (2) are overlapped and welded to be connected.

2. The copper-aluminum transition bar for electrical connection of copper-aluminum electrodes as claimed in claim 1, wherein: the ends of the copper sheet (1) and the aluminum sheet (2) which are opposite to each other are longitudinally bent into a U shape in the same bending direction of the close ends.