Lateral continuous composite copper-aluminum composite material and manufacturing method thereof

Abstract

The invention relates to a lateral continuous composite copper-aluminum composite material and a manufacturing method thereof, which belong to the technical field of power transmission. The lateral continuous composite copper-aluminum composite material comprises a copper strip and an aluminum strip, wherein two copper tenons at a vertical interval are arranged at one side of the copper strip; thelength of the copper tenon is equal to that of the copper strip; one side of the aluminum strip is provided with aluminum tenon slots adapted to the copper tenons; the copper tenons are arranged in the aluminum tenon slots; an aluminum tenon is formed between the two aluminum tenon slots; a copper tenon slot is formed between the two copper tenons; the aluminum tenon is arranged in the copper tenon slot; and the joint surface between the aluminum tenon and the copper tenon is a stepped surface. The two copper tenons are vertically arranged, the flexibility in the joint area is good, and the anti-vibration performance is excellent; the joint surface between the aluminum tenon and the copper tenon is set to be the stepped surface, the area of the joint area of the copper-aluminum interfacecan be further increased on the basis of ensuring the strengths of the copper and aluminum tenons, the joint strength is improved, and electric contact is reduced; and crack propagation possibly generated by a part and looseness of the copper and aluminum tenons can be well suppressed.

Description

technical field [0001] The invention relates to the technical field of power transmission, in particular to a laterally continuous composite copper-aluminum composite material and a manufacturing method thereof. Background technique [0002] In the power and battery pack industry there is a need for a large number of connections between copper and aluminum conductive bars. Copper-aluminum composite materials have been extensively researched and developed for their excellent properties. [0003] At present, the conventional method of domestic production of copper-aluminum composite materials is welding of various physical principles, that is, welding copper and aluminum parts one by one into copper-aluminum electrical connection parts. This manufacturing method requires a large number of personnel and equipment, and the efficiency is low. , The cost is high, there is a certain rate of welding failure, the area of ​​the welding joint is limited, the product quality consistenc...

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Problems solved by technology

[0003] At present, the conventional method of domestic production of copper-aluminum composite materials is welding of various physical principles, that is, welding copper and aluminum parts one by one into copper-aluminum electrical connection parts. This manufacturing method requires a large number of personnel and equipment, and the efficiency is low. , high cost, a certain rate of defective welding, limited welding surface area, difficult to fully guarantee product quality consistency, stability, and reliability, unnecessary weight is too much

[0004] In foreign countries, copper-aluminum continuous side composite coils are stamped to manufacture electrical connection parts, but the bonding area of ​​the copper-aluminum interface is too small, the ability to prevent crack expansion is insufficient, the flexibility is poor, and there is a possibility of falling off, which affects reliability.

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