Lithiumsekundärbatterie, Batteriepack und Elektrofahrzeug

Details

Veröffentlichungs-Nr.

EP4765295

Anmeldetag

20. Dezember 2024

Veröffentlichung

26. Juni 2025

Rechtsraum

EP

Abstract

A lithium secondary battery may include an electrode assembly including a positive electrode, an electrolyte, and a battery case including an internal space for accommodating the electrode assembly and the electrolyte. The positive electrode includes a positive electrode active material, and the positive electrode active material includes a lithium nickel-based oxide containing 50 mol% to 70 mol% of nickel among all metals excluding lithium. An electrolyte filling factor (EFF) index defined by Equation 1 is 1.52 to 1.88. EFF = R E × S U N C <img class="EMIRef" id="0802dedc-d94f-4626-9103-2ab16080376a-ia01" /> In Equation 1, R<E> is a mass of residual electrolyte contained in the lithium secondary battery after activation, S<U> is a ratio (S<E>/S<C>) of the volume (S<E>) of the electrode assembly and the volume (S<C>) of the lithium secondary battery, and N<C> is a capacity when the lithium secondary battery is discharged from 4.4 V to 3.0 V at 0.33 C at 25 °C.

Anmelder

Firma

LG Energy Solution, Ltd.

Land

🇰🇷 Südkorea