How to choose a nickel strip for a lithium battery?

The width and material of the nickel strip should be selected according to the current of the lithium battery pack. In terms of material, there are two commonly used nickel strips: pure nickel strips and nickel plated steel. What is the difference between their performance and actual use?

How thick should nickel strips be?

I'm trying to minimize the thickness of my nickel strips, by evaluating how wide I can make my strips. Typical cheap spot welders have difficulty spot welding strips thicker than 0.15 mm. The largest cross sectional area on this chart is 12 mm wide and 0.15 mm thick, with optimal current carrying capacity of 17 A (from that table).

How much current can a nickel strip withstand?

For nickel-plated steel, its calculation formula is usually calculated according to 7A/mm², that is to say, the maximum continuous overcurrent of nickel-plated steel with a thickness of 0.15mm*7mm is 7*0.15*7=7.35A. It can be seen that the current that a pure nickel strip can withstand is about 1.5 times that of nickel plated steel.

What if each battery has a 15A nickel strip?

If each battery cell in parallel had its own 15A nickel strip connection to the next battery in series, you'd have 5 independent 12v batteries that arerated for 15A and are properly sized, adding a strip between them allows them to compensate for minor differences in voltage and capacity while also naturally balancing the 5 12v batteries together.

What is nickel strip?

Nickel strip is a material often used in series and parallels lithium battery packs. The width and material of the nickel strip should be selected according to the current of the lithium battery pack. In terms of material, there are two commonly used nickel strips: pure nickel strips and nickel plated steel.

What material is used to connect lithium ion batteries?

Nickel is the preferred conductor to connect lithium-ion battery cells together. Nickel strip is the most common material used in lithium-ion battery construction because it is easy to spot weld and has excellent anti-corrosive properties while having a relatively low cost. 99.6% pure nickel strip in a variety of lengths, widths, and thicknesses.