LMFP Battery Charging Current Staging for Full Capacity Use

The patent applies preliminary action by first charging the battery at a higher current rate to generate heat and raise the battery temperature before performing capacity-determining charging. This preliminary heating action enables subsequent charging to occur at elevated temperatures where the battery can achieve full capacity utilization. The method divides charging into stages: initial charging at higher current to heat the battery, then switching to lower current for capacity determination, thereby resolving the contradiction between capacity utilization and energy consumption.

The patent applies self-service by utilizing the battery's own charging process to generate the heat needed for temperature maintenance. During initial charging at higher current rates, the battery self-generates heat through electrochemical reactions, raising its temperature without requiring external heating devices. This self-heating mechanism eliminates the need for additional heating components, maintaining charging temperature while avoiding increased device complexity and cost.

The patent applies segmentation by dividing the charging process into distinct stages with different current rates. The first stage uses higher current to rapidly charge and heat the battery, achieving high charging rate. The second stage switches to lower current to complete charging at the elevated temperature, avoiding excessive heat generation and energy waste. This segmented approach optimizes both charging rate and energy efficiency by applying high current only when necessary for heating, then reducing current for the remainder of charging.