Bayerische Motoren Werke Aktiengesellschaft

Dave Andre

Simon Nuernberger

Christoph Bauer

Barbara Stiaszny

Saskia Schneider

Dennis Schuenemann

Sandra Zugmann

Jan Philipp Schmidt

Thomas Woehrle

Sebastian Scharner

Nikolaos Tsiouvaras

Byron Konstantinos Antonopoulos

Tobias Zeilinger

Jakub Reiter

Jan-Oliver Roth

Christoph Stinner

A method is provided for operating a lithium ion battery having at least one lithium ion cell and a heating device, the method includes a step of operating the lithium ion battery in a temperature range between 5 and 90° C. The heating device is designed to operate the lithium ion battery in a temperature range between 5 and 90° C. The lithium ion cell includes an anode, a cathode, a separator, a current collector and an electrolyte. The electrolyte can contain LiBOB as the conducting salt and at least one solvent selected from propylene carbonate and ethylene carbonate; or having LiFSI and/or LiDFOB as the conducting salt and at least one solvent selected from glycol ether and/or DMC; or having LiFSI and/or LiTFSI and/or LiDFOB and/or LiTDI as the conducting salt and at least one solvent selected from imidazolium compounds, pyrrolidinium compounds and piperidinium compounds.

Method for operating a lithium ion battery, lithium ion battery, and motor vehicle

A method for producing metal-based thin foils is provided, which includes the steps of extruding a metal through an extruder to form a preliminary foil, cooling the preliminary foil in a coolant bath, and rolling the preliminary foil in a rolling system containing at least two rollers to form a metal-based thin foil.

Production of metal-based thin foils

A method is provided for impedance-controlled fast charging of a stored electrical energy source of a working device, in particular of a stored energy source in a vehicle. In the method: a variable characteristic of an impedance of the stored energy source is detected; a present charging current for charging the stored electrical energy source is set as a function of the variable characteristic of the impedance; the present charging current is temporarily reduced with a steep edge by temporarily connecting a resistive load to the stored energy source and feeding the load using the stored energy source; and a voltage response of the stored energy source to the steep edge is detected as the variable characteristic of the impedance of the stored energy source and is used as the basis for setting the present charging current.

Method for impedance-controlled fast charging, control unit for a charging system, stored energy source, and working device

A sintered electrode having a sintered composite material is provided. The composite material contains (A) active-material particles, (B) solid-state electrolyte particles from an inorganic lithium ion conductor, (C) a particulate conductivity additive from an electrically conductive material and (D) a fibrous material, with weight proportions N(A) to N(D) of components (A) to (D) in the composite material satisfy the following: N (A)&#x3e;N (B)&#x3e;N (C), N (D). A solid-state lithium-ion battery containing such sintered electrode is also provided.

Fiber-reinforced sintered electrode

Growing community of inventors

Munich, Germany

Dave Andre