Battery capacity variable control apparatus and method

CN115366742BActive Publication Date: 2026-07-07HYUNDAI MOTOR CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HYUNDAI MOTOR CO LTD
Filing Date
2021-12-01
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

In hybrid electric vehicles, the driver's driving characteristics and driving conditions cause the actual SOC to deviate from the central SOC, resulting in reduced system efficiency, decreased fuel efficiency, and insufficient battery durability when used in the low SOC region.

Method used

The battery electrical characteristics are measured by the sensor unit, the capacity limit rate is set by the input unit, the control unit selectively changes the battery charging or discharging area according to the limit rate, outputs virtual setting SOC information, limits the battery usage area to optimize durability performance, and utilizes the limited remaining capacity in emergency driving mode.

Benefits of technology

It effectively extends battery life, improves battery durability and fuel efficiency, and ensures long-distance driving in emergency driving mode.

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Abstract

A battery capacity variable control device and method are disclosed. The battery capacity variable control device includes a sensor unit configured to measure an electrical characteristic value of a battery to output actual SOC information, an input unit electrically connected to the sensor unit and configured to set a capacity limit rate of the battery based on the actual SOC information output from the sensor unit, and a control unit electrically connected to the input unit and configured to selectively change a use region of charging or discharging of the battery according to the capacity limit rate set in the input unit to output virtual set SOC information, and set a use amount of the battery according to the virtual set SOC information.
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