System for controlling charging of a battery
AssigneeCirrus Logic International Semiconductor Ltd.
InventorsJeffrey D. ALDERSON, Jon D. HENDRIX, John L. MELANSON
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Abstract
A system for controlling charging of a battery, the system comprising: charging circuitry for supplying a charging current or voltage to the battery, wherein the charging circuitry is configured to periodically detect an impedance of the battery and to control the charging current or voltage based on the detected impedance.
Claims33
A system for controlling charging of a battery, the system comprising:
- charging circuitry for supplying a charging current or voltage to the battery,
- wherein the charging circuitry is configured to periodically detect an impedance of the battery and to control the charging current or voltage based on the detected impedance.
A system for controlling charging of a battery, the system comprising:
- a charging circuit configured to:
- detect an impedance of the battery;
- infer, based on the detected impedance of the battery, a temperature of the battery;
- supply a charging current to the battery, wherein the charging current is based on the inferred temperature of the battery.
A system for controlling charging of a battery, the system comprising:
- a heating arrangement for heating the battery;
- a charging circuit configured to detect a temperature of the battery and to control the heating arrangement based on the detected temperature to maintain an impedance of the battery within a predefined impedance range for charging.
A system for estimating a temperature of a battery, wherein the system is configured to:
- monitor a load current drawn from the battery;
- based on the monitored load current, detect the impedance of the battery across a plurality of different frequencies or frequency ranges to generate an electrochemical impedance spectrum (EIS) measurement output for the battery;
- and
- estimate the temperature of the battery based on the EIS measurement output.
A system for controlling charging of a battery, the system comprising:
- charging circuitry for supplying a charging current to the battery;
- and
- a heating arrangement for heating the battery,
- wherein the charging circuitry is configured to detect an impedance of the battery and to control the heating arrangement based on the detected impedance to maintain a temperature of the battery within a predefined temperature range for charging.
Dependencies are inferred from the claim text.