CONTROL DEVICE FOR SECONDARY BATTERY AND METHOD FOR ESTIMATING FULL CHARGE CAPACITY OF SECONDARY BATTERY: abstract simplified (18100687)

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  • This abstract for appeared for 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 it has a flat region where the state of charge (SOC) remains constant even as the open circuit voltage (OCV) changes.

The system includes a stage change detecting unit that can detect when the battery enters a new stage during the vehicle's operation. When a stage change is detected, a discharge current integrating unit calculates the amount of discharge current that has been used up to that point.

When the battery is externally charged, a charge current integrating unit calculates the amount of charge current that has been supplied until the battery is fully charged.

Finally, a full charge capacity calculating unit takes into account 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.

In summary, this system allows for the monitoring and calculation of the battery's capacity based on its SOC-OCV characteristic, discharge current, and charge current.


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.

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