US Patent Application 18100687. CONTROL DEVICE FOR SECONDARY BATTERY AND METHOD FOR ESTIMATING FULL CHARGE CAPACITY OF SECONDARY BATTERY simplified abstract
CONTROL DEVICE FOR SECONDARY BATTERY AND METHOD FOR ESTIMATING FULL CHARGE CAPACITY OF SECONDARY BATTERY
Organization Name
TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor(s)
Kenta Onishi of Kariya-shi (JP)
Mitsuhiro Kuzuba of Kasugai-shi (JP)
Yoshihiro Uchida of Nagakute-shi (JP)
CONTROL DEVICE FOR SECONDARY BATTERY AND METHOD FOR ESTIMATING FULL CHARGE CAPACITY OF SECONDARY BATTERY - A simplified explanation of the abstract
- This abstract for appeared for US patent application number 18100687 Titled 'CONTROL DEVICE FOR SECONDARY BATTERY AND METHOD FOR ESTIMATING FULL CHARGE CAPACITY OF SECONDARY BATTERY'
Simplified Explanation
This abstract describes a system for monitoring and calculating the capacity of a battery in an electric vehicle. The battery has a characteristic called SOC-OCV, which means that its state of charge (SOC) is related to its open circuit voltage (OCV). The system includes a stage change detecting unit that detects when the battery enters a different stage of charge during vehicle operation. When this occurs, a discharge current integrating unit calculates the amount of discharge current that has been used.
When the battery is externally charged, a charge current integrating unit calculates the amount of charge current that has been applied until the battery is fully charged. Finally, a full charge capacity calculating unit uses the storage amount at the time of the stage change, the discharge current integrated amount, and the charge current integrated amount to calculate the full charge capacity of the battery.
Original Abstract Submitted
A battery has an SOC-OCV characteristic having a flat region. When a stage change detecting unit detects an occurrence of stage change during traveling of an electrified vehicle, a discharge current integrating unit calculates a discharge current integrated amount. When external charging is started, a charge current integrating unit calculates a charge current integrated amount until the battery is fully charged. A full charge capacity calculating unit calculates a full charge capacity based on a storage amount at a time of the stage change, the discharge current integrated amount, and the charge current integrated amount.
