METHOD FOR DETERMINING THE STATE OF AN ELECTRIC ENERGY STORAGE UNIT, CORRESPONDING DEVICE FOR CARRYING OUT THE METHOD, AND CORRESPONDING ELECTRIC ENERGY STORAGE UNIT

• Main Authors: GANSEMER MICHAEL, WOLL CHRISTOPH
• Format: Patent
• Language: Chinese; English
• Published: 24.04.2020
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; PHYSICS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; TESTING

The invention relates to a method for determining the state of an electric energy storage unit, wherein the electric energy storage unit has at least two pole connections and an electrode assembly, and the method has the following steps. An elongation of the electrode assembly and/or a force exerted by the electrode assembly is detected (S11). Additionally, a first state variable which representsa first state of the electric energy storage unit is ascertained (S13) using the detected elongation of the electrode assembly and/or the force exerted by the electrode assembly and using a first mathematical model stored in a data storage unit. Additionally, at least one electric variable of the electric energy storage unit is detected (S12). Additionally, a second state variable which representsthe first state of the electric energy storage unit is ascertained (S14) using the detected at least one electric variable of the electric energy storage unit and a second mathematical model stored in a data storage unit. A f