Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

Volkswagen Ag

Thyssen Krupp Ag

Thyssenkrupp System Engineering Gmbh

Michael Clauss

Uwe Partsch

Mareike Wolter

Martin Mener

Thomas Echelmeyer

Sascha Drenkelforth

Michael Roscher

Daniel Tittel

Kristian Nikolowski

Jorg Schleicher

In the electrical energy storage element in accordance with the invention, a plurality of electrochemical cells that are each formed with a cathode and an anode as electrodes and an electrolyte are arranged stacked above one another. They are enclosed at one side by a top plate formed from an electrically conductive material, in particular aluminum, and at the oppositely disposed side by a base plate formed from an electrically conductive material, in particular aluminum. The base plate is coated by a cathode or by an anode and the cover plate is coated in a complementary manner by an anode or by a cathode. The anodes and cathodes are each formed at oppositely disposed surfaces of an electrically conductive carrier film which preferably comprises aluminum, copper, steel or an electrically conductive plastic. An outer peripheral margin is present at the carrier film that is free of electrode material and connects adjacent electrochemical cells to one another in a hermetically sealed manner with respect to the environment by means of a sealing and bonding agent. The anodes comprise a lithium titanate (LTO) having a spinel structure and the high-voltage cathodes are formed from a lithium nickel manganate (LNMO) having a spinel structure or from lithium phosphates (LP) in an olivine structure. With a gel electrolyte, a respective separator layer is present between the electrolyte and an electrode of an electrochemical cell and with a solid electrolyte no separator layer is present.

Electrical energy storage element, method and apparatus for producing said electrical energy storage element

An apparatus and a method for determining an operating point-dependent change in resistance factor (AF) of an energy storage device, wherein a start resistance is determined at an operating point start point in time, wherein a change in resistance between a present resistance of the energy storage device and the start resistance is determined at least at an operating point end point in time, wherein an end resistance is determined as a sum of the start resistance and the change in resistance determined at the operating point end point in time, wherein the operating point-dependent change in resistance factor (AF) is determined as a ratio between the end resistance and a nominal resistance proportion of the start resistance, and to methods for determining an operating point-dependent resistance.

Method and apparatus for determining an operating point-dependent change in resistance factor and vehicle

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Chemnitz, Germany

Michael Clauss