Prevent battery overcharge control

To prevent battery overcharge control, endpoint charging when the battery is full, there will be some special information can be used to determine whether charging reach the end.

Generally have the following six methods to prevent battery overcharge:
iphone 4 external battery, Portable Mobile Charger, tablet pc charger

Peak voltage control: peak detection battery voltage to determine the end point of the charge;

2. DT / dt control: to determine the end of the charging battery by detecting the peak temperature change rate;

T control: when the battery is fully charged, the temperature difference between ambient temperature maximum;

4.-V control: When the battery is fully charged to reach a peak voltage, the voltage will drop a certain value

Timing control: to control the charging end point by setting the charging time is generally set to charge into the time required for 130% of the nominal capacity to control;

6. TCO control: Consider the safety and characteristics of the battery should be avoided except for the high-temperature (high temperature battery) charging should stop charging when the battery temperature is raised to 60 OC.