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A method of determining the charge status of a battery, in particular an automotive battery, comprising the following steps: determining a first battery charge status socU0on the basis of a measurement of the no-load voltage of the battery, determining a second battery charge status socion the b

A method of determining the charge status of a battery, in particular an automotive battery, comprising the following steps: determining a first battery charge status socU0on the basis of a measurement of the no-load voltage of the battery, determining a second battery charge status socion the basis of integration of a battery current over time, and forming a weighted average from battery charge states socU0and socithus determined, to obtain an average battery charge status soc.

대표청구항 ▼

1. A method of determining a charge status of a battery, comprising: determining a first battery charge status as a function of a measurement of a no-load voltage of the battery; determining a second battery charge status as a function of an integration of a battery current over time; and deter

1. A method of determining a charge status of a battery, comprising: determining a first battery charge status as a function of a measurement of a no-load voltage of the battery; determining a second battery charge status as a function of an integration of a battery current over time; and determining a weighted average from the first and second battery charge statuses in order to obtain an average battery charge status. 2. The method according to claim 1, wherein the battery is an automotive battery. 3. The method according to claim 1, wherein the weighted average is determined on the basis of an equation of the form: soc=(1-gew)*soci+gew*socU0 where gew is a weighting factor, for which the inequality 0≤gew≤1 holds, sociis the second battery charge status, and socU0is the first battery charge status. 4. The method according to claim 3, wherein the weighting factor is predetermined on the basis of an equation of the form: gew=1-exp (-tR/TR) where tRis a duration of a prior resting phase, and TRis a time constant of a transient response of the battery no-load voltage until it reaches a battery open-circuit voltage. 5. A device for determining a charge status of a battery, comprising: a first arrangement for determining a first battery charge status as a function of a measurement of no-load voltage of the battery; a second arrangement for determining a second battery charge status as a function of an integration of a battery current over time; and a third arrangement for determining a weighted average from the first and second battery charge statuses in order to obtain an average battery charge status. 6. The device according to claim 5, wherein the battery is an automotive battery.