SEQUENCE CURRENT CHARGING OF COMPOSITE LITHIUM METAL BATTERY CELLS

• Main Authors: Montoya, Anthony T, Cho, Sungjin
• Format: Patent
• Language: English
• Published: 17.10.2024
• Subjects: BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SYSTEMS FOR STORING ELECTRIC ENERGY

A method for sequence current charging a composite lithium metal battery cell is disclosed. In one example, the method includes applying, to a composite lithium metal battery cell for an initial predefined time period, a charging current that is equal to a first portion of a full charging current, wherein the composite lithium metal battery cell includes a composite lithium metal anode; adjusting, after the initial predefined time period, the charging current applied to the composite lithium metal battery cell to a level equal to a second portion of the full charging current for a second predefined time period, wherein the charging current is immediately adjusted at an end of the initial predefined time period without affording the composite lithium metal battery cell any rest or relaxation period; and adjusting, after the second predefined time period, the charging current applied to the composite lithium metal battery cell to a level equal to a third portion of the full charging current until an expiration of a target charging time, wherein the charging current is immediately adjusted at an end of the second predefined time period without affording the composite lithium metal battery cell any rest or relaxation period.