A battery monitoring system includes a component for determining the magnitude of current flowing through a battery cable based on a magnetic field produced by the current. The component is configured to provide an output signal representative of the magnitude of current for use in characterizing the battery. A method for characterizing a battery utilizing a battery monitoring system includes inferring a magnitude of battery current based on a magnetic field generated by current flowing through a battery cable coupled to the battery. The battery monitoring system is adapted to characterize the battery utilizing at least one mathematical construct.

Battery monitoring system and method

A system for modeling a lead-acid battery is disclosed. A system for modeling a lead-acid battery is also disclosed. An equivalent circuit model of a battery comprising an impedance circuit for simulating the electrochemical charging and discharging of the battery is also disclosed. A circuit (100) for modeling a lead-acid battery having an RC network for simulating the impedance of cells of the battery is also disclosed. A method of modeling a lead-acid battery with an electrical circuit (100) comprising a charging circuit (111), an electrochemical reaction circuit (113), and a voltage drop circuit (115) is also disclosed. A method for constructing an equivalent electrical circuit model of a lead-acid battery is also disclosed.

Battery characterization system

A method for determining characteristic variables for electrical states of an energy storage battery includes subdividing an electrolyte volume of the battery into at least two electrolyte volume components with associated electrolyte balancing areasabd defining at least two electrode plate balancing areas by subdividing the total resistance of electrode plates in the battery into resistance components for the defined electrode plate balancing areas and by subdividing the total energy storage capacity of the electrode plates into energy storage capacity components for the defined electrode plate balancing areas. The method further includes determining the electrolyte concentration of the electrolyte volume components for the defined electrolyte balancing areas and determining the amounts of charge which are held in the electrode plates in each of the electrode plate balancing areas. At least one characteristic variable for associated electrical states of the battery is determined using a mathematical model.

Device and method for determining characteristic variables for batteries

A method for prediction of electrical characteristics of an electrochemical storage battery and includes determining a functional relationship between a state of charge value which is related to a first parameter for a storage battery and a second state of charge value which is related to a second parameter for the storage battery for a second phase of use of the storage battery. The method also includes determining at least one characteristic variable from the reference of the functional relationship for the second phase to a state characteristic variable profile for a previous first phase of use of the storage battery. The method further includes predicting electrical characteristics of the storage battery utilizing a functional relationship between the characteristic variable and the electrical characteristics.

Method for prediction of electrical characteristics of an electrochemical storage battery

A method for determining the amount of charge which can be drawn from a storage battery includes determining a battery voltage and current profile over at least one time interval; smoothing the battery voltage profile and the battery current profile using at least two different smoothing measures; and determining voltage and current differences between battery current and voltage profiles smoothed using a second and third smoothing measure, with the third smoothing measure producing greater smoothing than the second smoothing measure. The method further includes calculating characteristic values from quotients of the voltage differences and the current differences; utilizing the characteristic values for a time interval to determine an interval characteristic value; and determining the amount of charge which can be drawn from the storage battery from at least one interval characteristic value for at least one time interval. A monitoring device may be provided for carrying out the method.

Method for determining the amount of charge which can be drawn on a storage battery, and monitoring device for a storage battery

A battery model for circuit simulation is provided. The battery model comprises a transmission line type network. The network includes a non-standard particle that represents physical properties, chemical properties, ionic and atomic transport properties, charge and discharge rates, temperature and history of usage of rechargeable cells. The model can be represented as a graphical icon within the circuit simulator. The model allows accurate representation of battery cells. The model is a modularized mathematical model that can be programmed using a circuit simulator's structure and language. This invention breaks the continuous mathematical model into pieces that are digestible by common circuit simulators.

Lijun Bai

Papers

Modularized battery models for electronic circuit simulators