Lithium-ion battery, and lithium-ion battery system

Abstract

Lithium-ion battery comprising a housing, an electrical core, and an electrolyte solution, wherein the electrical core and the electrolyte solution are arranged within the housing, wherein the electrical core comprises a cathode foil, an anode foil, and a separator, the separator being arranged between the cathode foil and the anode foil, the cathode foil comprising a cathode collector and an active cathode substance layer, the active cathode substance layer being electrically connected to the cathode collector; wherein the anode foil comprising an anode collector and an active anode substance layer, the active anode substance layer being electrically connected to the anode collector; characterized in that the anode collector is provided with the active anode substance layer on at least one surface, the thickness of the active anode substance layer on one side of the anode foil being 50 µm to 95 µm;wherein the active anode substance layer comprises an active anode substance, wherein the active anode substance comprises graphite; wherein Dv50 of the graphite is in a range of 10 µm to 30 µm, wherein the degree of graphitization of the graphite is greater than or equal to 90%; and that the cathode collector is provided with the active cathode substance layer on at least one surface, wherein the thickness of the one-sided active cathode substance layer of the cathode foil is 60 µm to 105 µm; wherein the active cathode substance layer comprises an active cathode substance, wherein the active cathode substance is a lithium-containing phosphate and a carbon layer located on the surface of the lithium-containing phosphate; wherein the capacity L of the lithium-ion battery is 300 Ah < L ≤ 500 Ah, and wherein the actual gas storage volume v of the lithium-ion battery is greater than 87 cm³.