How does the performance of lithium batteries in new energy vehicles fare in low winter temperatures?

[JuliaDella]

New energy vehicle lithium batteries experience a slight decline in performance during winter low temperatures. Reasons for reduced battery performance in low temperatures: At low temperatures, the concentration of the electrolyte increases, the diffusion coefficient decreases, and the charge transfer impedance (Rct) inside the battery significantly rises. Additionally, lithium plating on the anode becomes more severe in low-temperature environments. The plated metallic lithium reacts with the electrolyte, and the resulting products deposit, leading to an increase in the thickness of the solid electrolyte interface (SEI). Charging environment temperature considerations: During colder weather, it is advisable to charge in warmer locations such as enclosed underground garages or indoor parking lots. Alternatively, choose sunny daytime periods with higher temperatures for charging.