Method for Determining the State of an Electrical Energy Storage Unit, Corresponding Device for Carrying Out the Method and Corresponding Electrical Energy Storage Unit

• Main Authors: Gansemer, Michael, Woll, Christoph
• Format: Patent
• Language: English
• Published: 11.06.2020
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PERFORMING OPERATIONS; PHYSICS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; TESTING; TRANSPORTING; VEHICLES IN GENERAL

A method is provided for determining the state of an electric energy storage unit having at least two pole connections and an electrode. An extension of the electrode assembly and/or of a force exerted by the electrode assembly is detected, a first state variable, representing a first state of the electric energy storage unit is ascertained using the detected extension and/or the force and a first mathematical model is stored. An electric variable of the electric energy storage unit is detected and a second state variable, representing the first state of the electric energy storage unit is ascertained using the detected electric variable and a second mathematical model is stored. The first state variable is compared with the second state variable and the first mathematical model and/or variables ascertained by the first model are/is changed depending on the comparison, and/or the second mathematical model and/or variables ascertained by the second model are/is changed depending on the comparison.