Battery Charging Control with Stepped Current Above Voltage Limit

The patent applies dynamics by transitioning from static constant voltage charging to dynamic stepped current charging. The charging current is divided into multiple steps with different current values, where each step maintains a specific voltage range. This dynamic adjustment allows the battery to charge faster while preventing excessive voltage that would damage cycle life, thus resolving the contradiction between charging speed and battery reliability.

The patent changes the charging parameters by introducing multiple current steps with different amplitudes instead of using a single constant current. Each current step corresponds to a specific voltage range, and the current value is adjusted based on the battery's state of charge. This parameter change enables faster charging in early stages while protecting the battery in later stages, addressing both speed and safety requirements.

The patent segments the charging process into multiple steps, where each step uses a different current value and corresponds to a specific voltage range. Instead of using one prolonged constant voltage phase, the charging is divided into several phases with decreasing current values. This segmentation allows efficient charging in early stages while providing safety protection in later stages, reducing total charging time without compromising overvoltage prevention.

The patent implements periodic action by cycling through multiple charging steps with different current amplitudes. Each step maintains charging within a safe voltage range while providing substantial charge input. This periodic modulation of charging current allows the system to achieve both fast charging and overvoltage protection, eliminating the need for excessively long constant voltage charging.

The patent applies dynamics by using adaptive voltage thresholds for each charging step. Instead of a single fixed voltage limit, each current step has its own voltage threshold that is appropriate for that charging phase. This dynamic voltage management allows higher effective charging in early stages while maintaining protection in later stages, thus improving charging efficiency without compromising battery protection.

The patent applies local quality by tailoring the voltage threshold to each specific charging step. Different parts of the charging process (different steps) have different voltage thresholds optimized for their specific requirements. Early charging steps have higher voltage thresholds for efficiency, while later steps have lower thresholds for protection. This localized optimization resolves the contradiction between charging efficiency and battery protection.