Robert Boschgmbh

Gs Yuasa International Ltd.

Alexander Schmidt

Christoph Woll

Martin Kessler

Andy Tiefenbach

Bernd Dittmer

Volker Doege

Arpad Imre

Tunan Shen

Taleb Janbein

Michael Gansemer

Mathias Kurras

Florian Bessler

Gael Le Hen

Thorsten Schneider

A method for operating a battery module, including multiple battery cells. The method includes: a) ascertaining cell voltages of the individual battery cells at a starting point in time; b) ascertaining at the starting point in time an average cell voltage from the cell voltages of the battery cells ascertained at the starting point in time; c) estimating the cell voltage of at least one battery cell at an operating point in time if the cell voltage of the battery cell is not measurable at the operating point in time, taking into account the cell voltage of the battery cell ascertained at the starting point in time, the average cell voltage ascertained at the starting point in time, and an average cell voltage ascertained at the operating point in time.

Method for operating a battery module

A method for operating an electrical energy store system including at least two electrical energy store units. The method includes: a) ascertaining voltages of the at least two electrical energy store units; b) ascertaining at least one first characteristic value of the ascertained voltages; c) ascertaining a charge voltage limiting value and/or a discharge voltage limiting value as a function of the ascertained at least one characteristic value; and d) operating the electrical energy store system as a function of the ascertained charge voltage limiting value and/or discharge voltage limiting value.

Method for operating an electrical energy store system

A battery system for an electric vehicle. The electric vehicle includes a plurality of serially interconnected battery modules, each battery module having at least two battery cells interconnected in parallel, a master control unit for supervising the battery modules, and a slave control unit for supervising the battery modules. A master supervision unit having master sensors for detecting measured values of the battery cells and of the battery module and a slave supervision unit having slave sensors for detecting measured values of the battery cells and of the battery module are assigned to each battery module. The master supervision units communicate with the master control unit, the slave supervision units communicate with the slave control unit, and the master control unit communicates with the slave control unit.

Battery system for an electric vehicle, method for operating a battery system, and electric vehicle

The invention relates to an electrical energy storage module, comprising at least one storage cell stack () that has a plurality of groups of first planar parallel energy storage cells (), each having first electrode elements (), and a plurality of groups of second planar parallel energy storage cells () arranged planar parallel to the group of first energy storage cells (), said second groups each having second electrode elements (). The groups of first and second energy storage cells () are arranged alternately along a first direction of extension of the storage cell stack () and the first electrode elements () have a polarity on a side face of the storage cell stack () that is different from the second electrode elements () on the side face of the storage cell stack (). The energy storage module further comprises a plurality of flat contact elements () that are arranged on the side faces of the storage cell stack (), galvanically connect adjacent groups of first and second energy storage cells (), and contact substantially all first or second electrode elements () of the adjacent groups of first and second energy storage cells () across the width of the storage cell stack () in each case.

Electrical energy storage module and method for producing an electrical energy storage module

A battery cell (), having a low-inductance, capacitive parallel path interconnected between the poles of the battery cell (), wherein the parallel path is embodied as a discrete capacitor ().

Battery cell

A method and electrical system for controlling the power supply of an electric motor, in particular the electric motor of a vehicle that can be electrically driven, includes a control device that controls the power supply of the electric motor by an energy store. The energy store comprises a plurality of modules that are exposed to stress due to repeated charging and/or discharging and undergo an aging process as a result of said stress. In order to decouple the service life of the energy store from the service life of a vehicle, for example, the control device controls the charging and/or discharging of at least two modules differently such that said modules exhibit a stress difference so as to selectively reduce the aging process of the module being exposed to less stress.

Growing community of inventors

Donaueschingen, Germany

Alexander Schmidt