Robert Boschgmbh

Siegfried Lehmann

Markus Karl Vogel

Peter Ostertag

Christian Schlasza

A device and method for determining the storage capacity of an electrical energy store, as for example a rechargeable battery, based on the phase of the complex impedance of the electrical energy store. The impedance of the electrical energy store is determined in that the energy store is loaded with a specified periodic load and the system response setting in as a result is ascertained. On the basis of the correlation between the phase of the complex impedance of the electrical energy store and the storage capacity of the electrical energy store, it is thereupon possible reliably and in a simple manner to ascertain the storage capacity of the electrical energy store.

Device and method for determining a storage capacity of an electrical energy store

A device for servicing/maintaining a high-voltage battery, which has individual battery cells or battery modules, and high-voltage positive and negative terminals, and a battery management system having a data transmission terminal for bidirectionally transmitting management system data between the management system and an information-processing unit, external to the battery. The device includes at least two of: a battery charge device, a battery discharge device, and a battery diagnostic device. A battery charge device brings a battery to a higher charge state, and has positive and negative terminals to be connected to positive and negative battery terminals. A battery diagnostic device checks a battery, and the device, for the presence of internal errors, and to indicate recognized internal errors, and may also produce diagnostic data for the battery state and triggering functions directed to bring the device and/or battery safely into a different state, to operate/test them.

Growing community of inventors

Ebersbach, Germany

Siegfried Lehmann