The invention discloses an
equalization control method and
system for a
power battery, a terminal and a storage medium, and belongs to the technical field of power batteries, and the method comprises the steps: 1, obtaining the
depolarization OCV recognition basic data of a vehicle end battery; 2, calculating the
depolarization time of the battery based on the complete vehicle end battery
depolarization OCV identification basic data; 3, the depolarization
time deviation degree between the batteries is calculated; and step 4, determining an
equalization target battery based on the battery depolarization deviation degree. According to the method, the online
big data platform monitors the depolarization time between different batteries after discharging is finished, if the deviation degree of the depolarization time of the batteries is larger than 5 min under the same dimension, the target balanced battery is locked, and the target balanced battery is remotely and actively started to be balanced in a
dormancy awakening mode through the
big data platform. According to the method, the
battery capacity can be utilized to the maximum extent, the endurance mileage of the
electric vehicle is increased, and the service life of the battery is prolonged.