Battery Charging Method with Rest Periods for Heat Management

The patent applies periodic action by implementing multiple rest periods during high-rate charging. The charging process is divided into stages with intermittent pauses (e.g., first rest period after initial high-rate charging, second rest period before low-rate charging). During these rest periods, charging is temporarily suspended to allow heat dissipation, then resumed. This periodic interruption of charging current reduces cumulative heat generation while maintaining overall fast charging capability, thus resolving the contradiction between charging speed and heat management.

The patent segments the continuous charging process into distinct phases separated by rest periods. The charging cycle is divided into: initial high-rate charging phase, first rest period, continued high-rate charging, second rest period, and final low-rate charging phase. This segmentation allows the system to maintain high charging efficiency during active charging phases while periodically suspending charging to reduce stress on the battery, thereby extending battery lifetime without significantly compromising overall charging efficiency.

The patent applies partial action by implementing rest periods that are sufficient to achieve heat dissipation and degradation prevention, but not excessively long to cause significant charging time loss. The rest periods are strategically positioned at critical points in the charging cycle where heat accumulation is most problematic. By optimizing the duration and timing of these rest periods, the patent achieves adequate battery protection while minimizing the impact on total charging time, balancing reliability improvement with time efficiency.