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Lightweight aluminum-nickel composite busbar processing method

A processing method and busbar technology, applied in the direction of electrical components, circuits, battery pack parts, etc., can solve the problems of unstable welding strength, high contact resistance, high welding difficulty, etc., achieve flexible and changeable shape design, and improve use Lifespan, development-friendly effect

Inactive Publication Date: 2019-02-15
深圳市中金岭南鑫越新材料有限公司
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AI Technical Summary

Problems solved by technology

[0002] The current busbar production method usually consists of: stamping copper sheet and nickel sheet and then brazing, or copper and nickel-plated steel strip stamping separately and then brazing, or aluminum and nickel stamping separately Finally, it is integrated by brazing; welding is difficult, and the welding strength is unstable, and it is prone to false welding and over-welding; in addition, local brazing, the contact resistance between the two materials is large, which will cause energy loss

Method used

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  • Lightweight aluminum-nickel composite busbar processing method

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specific Embodiment 1

[0041] step one,

[0042] Nickel strip: 1.5×115mm, HV1.0:90, 1 roll;

[0043] Aluminum strip: 4.0×115mm, HV1.0:18, 2 rolls;

[0044] The two strips are polished on the polishing machine, rinsed with hot water after polishing, and dried with hot air at the same time to ensure that there are no sundries, water spots, etc. on the surface;

[0045] Step two,

[0046] Composite is carried out on a two-roll rolling compound machine. The temperature of the nickel strip at the roll mouth is controlled at 250°C, the temperature deviation is ±5°C, and the aluminum strip is at room temperature. Before the strip enters the roll, the ammonia decomposition gas (N2, H2 ) for protection, the gas flow rate is controlled to 7Nm3 / h, the thickness of the composite machine outlet is 3.0mm, and the composite material tail is broken at 90° after the composite retrieving, there is no separation in the cross section, and the composite strength is qualified;

[0047] Step three,

[0048] After comp...

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Abstract

The invention relates to a lightweight aluminum-nickel composite busbar processing method which is implemented as follows: selecting a nickel tape and an aluminum tape, performing cleaning treatment on the to-be-combined surfaces of the nickel tape and the aluminum tape; hot-pressing and compounding the nickel tape and the aluminum tape in an inert gas environment; performing polishing treatment on the outer surface of a compounded product and performing annealing treatment in a bright annealing furnace after treatment; and calendaring an annealed product multiple times till the required thickness is reached. The lightweight aluminum-nickel composite busbar processing method provided by the invention has the benefits that two materials, namely aluminum and nickel are compounded into a whole through a calendaring compound machine by fully utilizing the plastic deformation of metals and a principle of atomic diffusion between the metals, so that no re-connection is required in a local spot welding manner; after the two materials are compounded into a whole through calendaring, the contact resistance between the materials is far less than that of a local welding product after stamping, so that the loss of a battery after welding is reduced, and the service life of the battery is prolonged; the compounded material is flexible in product appearance design, and the product can be quickly delivered by utilizing an etching technology; therefore, the lightweight aluminum-nickel composite busbar processing method is very conducive to the development of new products.

Description

technical field [0001] The invention relates to the technical field of busbars, in particular to a processing method for lightweight aluminum-nickel composite busbars. Background technique [0002] The current busbar production method usually consists of: stamping copper sheet and nickel sheet and then brazing, or copper and nickel-plated steel strip stamping separately and then brazing, or aluminum and nickel stamping separately Finally, they are integrated by brazing; welding is difficult, and the strength of welding is unstable, and it is prone to false welding and over-welding; in addition, local brazing, the contact resistance between the two materials is large, which will cause energy loss. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for processing lightweight aluminum-nickel composite busbars in view of the above-mentioned defects in the prior art. [0004] The technical solution adopted by t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/20B21C37/02H01M50/507
CPCB21C37/02H01M50/502Y02E60/10
Inventor 覃超郑楠孙康林惠志杰
Owner 深圳市中金岭南鑫越新材料有限公司
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