Vb Autobatterie Gmbh

Vb Autobatterie Gmbh & Co. Kgaa

V8 Autobatterie Gmbh

Helmut Laig-Hoerstebrock

Eberhard Meissner

Ingo Koch

Ursula Teutsch

Wilfried Tautenhahn

Sepher Shirazi

A method for ascertaining the temperature in an electrical battery includes determining at least one temperature value at a temperature measuring point outside the battery in the vicinity of the battery; determining at least one electrical power value in dependence on a characteristic power variable associated with the operation of the battery; weighting the power values and the temperature values with an assigned weighting factor; and ascertaining the temperature in the electrical battery from an energy balance in dependence on the at least one weighted temperature value and the weighted electrical power values.

Device and method for ascertaining the temperature in an electrical battery

A method for determining at least one characteristic variable for the state of a battery includes: (a) determining the charge throughput of the battery per time step; having, (b) determining a first characteristic figure in order to describe the stratification of the electrolyte concentration in the battery on the basis of a defined initial state for an as-new battery, and of a second characteristic figure in order to describe the stratification of the state of charge in the battery on the basis of a defined initial value for an as-new battery during operation of the battery, in which (c) in each time step, the first characteristic figure and the second characteristic figure are adapted as a function of the charge throughput from the instantaneous state of the battery, and at least one characteristic variable is determined from the first and the second characteristic figure.

Monitoring device and method for determining at least one characteristic variable for the state of a battery

A method for determining the wear to an electrochemical energy store and an electrochemical energy store allows for continuously determining the amounts of charge (q) converted during charging cycles of the energy store and calculating a wear variable (Q) which characterizes the wear as a function of the determined converted amount of charge (q).

Electrochemical energy store and method for determining the wear to an electrochemical energy store

A method for predicting the internal resistance of an energy storage battery in assumed environmental and battery state conditions includes subdividing the internal resistance into a first resistance component which represents the electrical resistance of the energy storage battery for the region of electron conduction and a second resistance component which represents the electrical resistance of the energy storage battery for the region of ion conduction. The method also includes determining the first and second resistance components to be expected for the assumed environmental and battery state conditions. Each of the first and second resistance components are determined as a function of parameters of the assumed environmental and battery state conditions. Monitoring devices or computer programs may be utilized to carry out the method.

Method for prediction of the internal resistance of an energy storage battery, and a monitoring device for energy storage batteries

A method for determining the wear to a storage battery by monitoring the state of charge of the storage battery includes identifying a plurality of deep discharge events when a state of charge value for the storage battery is less than a minimum state of charge value specified for the storage battery. The method also includes determining the duration of the plurality of deep discharge events and determining a wear variable which characterizes the wear as a function of the total number and the total duration of the plurality of deep discharge events. The wear variable increases as the total number and the total duration of the deep discharge events increases. A monitoring device comprising a measurement unit and an evaluation unit that is configured to use the method may be provided. A computer program having computer program means designed to carry out the method may also be provided.

Method for determining the wear to a storage battery, and a monitoring device

A method for determining the amount of charge which can be drawn from a storage battery includes determining a response signal profile within a time interval to an electrical stimulus to the storage battery. The method also includes linearizing the response signal profile and determining the amount of charge which can be drawn as a function of a degree of change of the linearized response signal profile in the time interval. A monitoring device for a storage battery is provided that includes measurement means for measuring at least one of voltage and current of the storage battery over time intervals. The monitoring device also includes evaluations means that are designed for carrying out the method.

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Frankfurt-am-Main, Germany

Helmut Laig-Hoerstebrock