How do you describe deformation and failure of Li-ion batteries?

Deformation and failure of Li-ion batteries can be accurately described by a detailed FE model. The DPC plasticity model well characterizes the granular coatings of the anode and the cathode. Fracture of Li-ion batteries is preceded by strain localization, as indicated by simulation.

Do lithium-ion batteries fail under axial load?

In addition, under quasi-static axial compression, the intensity of thermal runaway becomes more severe with the increase in SOC and loading speed. The results shed light on the failure mechanism of lithium-ion batteries under axial load and guide the safety design of the battery and safety arrangement of battery packs.

How does deformation damage affect battery degradation?

Theoretically, when the deformation damage degree is sufficiently large, various aspects of the battery such as impedance and internal stress may be affected, thereby influencing the progressive degradation process of the battery after minor deformation damage. This is also one of the key focuses of our future research. Table 5.

Are lithium-ion batteries safe under mechanical loadings?

Safety of lithium-ion batteries under mechanical loadings is currently one of the most challenging and urgent issues facing in the Electric Vehicle (EV) industry. The architecture of all types of large-format automotive batteries is an assembly of alternating layers of anode, separator, and cathode.

How does axial compression affect lithium-ion battery failure?

Different failure modes of the battery were identified. Under quasi-static axial compression, the intensity of thermal runaway becomes more severe with the increase in SOC and loading speed, and the time for lithium-ion batteries to reach complete failure decreases with the increase in SOC.

Why do lithium batteries deplet ions?

Furthermore, the growth of the solid electrolyte interphase (SEI) layer also contributes to the depletion of active lithium ions . CL typically denotes a degradation process affecting electrical conductive elements within a battery, including the corrosion of cathode/anode current collectors .