Battery charging method, battery charging information generating method, and battery charging apparatus
AssigneeSamsung Electronics Co., Ltd.
InventorsDaeryong Jung, Jinho Kim
Life of this patent
Estimating the term…
Abstract
Provided are a battery charging method, a battery charging information generating method, and a battery charging apparatus. The battery charging apparatus may measure a temperature of a battery, may estimate a state of charge (SOC) and a state of health (SOH) of the battery, may acquire an F mapping relationship that maps F values to C-rates and SOCs at the temperature and the SOH, the F value denoting a ratio of variation of SOC to variation of voltage, and may generate a charging profile that is a sequence of charging C-rates for each of the SOCs for charging the battery based on the estimated SOC and the F mapping relationship.
Claims18
A battery charging method, comprising:
- measuring a temperature of a battery;
- estimating a state of charge (SOC) and a state of health (SOH) of the battery;
- acquiring an F mapping relationship that maps F values to C-rates and SOCs at the measured temperature and the estimated SOH, the F value denoting a ratio of variation of SOC to variation of voltage;
- and
- generating a charging profile that is a sequence of charging C-rates for each of the SOCs for charging the battery based on the estimated SOC and the F mapping relationship;
- wherein the generating of the charging profile comprises:
- extracting F values corresponding to the estimated SOC from the F mapping relationship;
- determining a charging C-rate corresponding to the estimated SOC based on the F values corresponding to the estimated SOC;
- extracting F values corresponding to a subsequent SOC of the estimated SOC from the F mapping relationship;
- and
- determining a charging C-rate corresponding to the subsequent SOC based on the F values corresponding to the subsequent SOC.
A battery charging information generating method, comprising:
- generating an F mapping relationship of a battery corresponding to a specific temperature of the battery and a specific state of health (SOH) of the battery by mapping F values for each C-rate to states of charge (SOCs), the F value denoting a ratio of variation of SOC to variation of voltage;
- and
- generating F mapping relationships corresponding to battery temperatures including the specific temperature, and to SOHs including the specific SOH, based on the F mapping relationship,
- wherein the generating of the F mapping relationship comprises:
- measuring F values corresponding to SOCs that increase in response to charging the battery of the specific temperature and of the specific SOH at a specific C-rate;
- and
- mapping the measured F values to the specific C-rate and the increasing SOCs.
A battery charging apparatus, comprising:
- a processor configured to:
- measure a temperature of a battery;
- estimate a state of charge (SOC) and a state of health (SOH) of the battery;
- acquire an F mapping relationship that maps F values to C-rates and SOCs at the measured temperature and the estimated SOH, the F value denoting a ratio of variation of SOC to variation of voltage;
- generate a charging profile that is a sequence of charging C-rates for each of the SOCs for charging the battery based on the estimated SOC and the F mapping relationship;
- extract F values corresponding to the estimated SOC from the F mapping relationship;
- determine a charging C-rate corresponding to the estimated SOC based on the F values corresponding to the estimated SOC;
- extract F values corresponding to a subsequent SOC of the estimated SOC from the F mapping relationship;
- and
- determine a charging C-rate corresponding to the subsequent SOC based on the F values corresponding to the subsequent SOC.
Dependencies are inferred from the claim text.