Research on new technology of rolling plating battery steel shell

Does nickel plated steel make a good battery shell?

The choice of nickel plated steel on its strength is critical. This study provides a solid dynamic constitutive modeling methodology for the LIB shell and the strain rate sensitive which may stimulate further study towards the safety design and evaluation of battery cells and packs.

Does modified technological shell reduce rolling force?

The use of the modified technological shell allows us to reduce the rolling force by 20-30%, while the simulated rolling force was reduced by 37% in the case of using the modified technological shell ( Ys / Yh = 0.1). The total thickness reduction of the U12 core is 44.9%, and a reduction of 38.5% was achieved in the case of bare rolling.

Does nickel plated cold rolled steel affect battery safety?

Interestingly, if the dynamic effect of nickel-plated cold-rolled steel is not considered in the model, a late short-circuit triggering time will be expected thus leading to the underestimation of the battery safety upon mechanical abusive loading (Table 2).

What is the material phase of battery shell?

XRD pattern illustrates that the material phase of the battery shell is mainly Fe, Ni and Fe-Ni alloy (Fig. 1 e). The surface of the steel shell has been coated with a thin layer of nickel (Ni) to improve the corrosion resistance, which is also demonstrated by cross-sectional image observation (Fig. S5a).

Do technological shells reduce the roll-separation force?

The use of technological shells effectively reduces the roll-separation force when the softest material is chosen ( Ys / Yh = 0.1). However, in this case, the rolling process is associated with the following issues: a total reduction of sheets from hard-to-deform materials is reduced, which reduces the rolling process efficiency;

Can technological shells be used to roll hard-to-deform materials?

The design of technological shells for the rolling of hard-to-deform materials was optimized based on FE simulation results; The developed technological shell was tested using the example of the rolling process of a model hard-to-deform tool steel.