Lithium battery equalization method, system and device and storage medium

Abstract

The invention discloses a lithium battery equalization method, system and device, and a storage medium, and the method comprises the steps: building an artificial endocrine regulation model, enablingeach endocrine cell in the artificial endocrine regulation model to correspond to each single battery, and enabling the position of each endocrine cell to be the difference between the capacity of each single battery and the average value of the capacities of all batteries, wherein the position of the target cell is zero; the movement direction and distance of hormones secreted by endocrine cellsare selected based on a movement rule, and when the hormones reach target cells, the shortest transfer path in multiple transfer paths of the hormones is the optimal equilibrium energy transfer path;and taking the transfer direction in the shortest transfer path as the current direction in battery capacity balance adjustment, taking the distance between endocrine cells and target cells in the shortest transfer path as the current magnitude in battery capacity balance adjustment, and further carrying out balance adjustment on the battery capacity. Therefore, rapid equalization is achieved, andthe real-time requirement for online equalization in the actual use process of the battery pack on the electric vehicle is met.

Description

technical field [0001] The invention belongs to the field of battery equalization management, and relates to a lithium battery equalization method, system, equipment and storage medium. Background technique [0002] The battery pack on an electric vehicle usually consists of hundreds or thousands of batteries. Continuous charge-discharge cycles lead to inconsistent rates of decline in battery life, which can greatly limit the capacity, power supply capability, and service life of a battery pack. A balance management system is necessary to mitigate this inter-cell inconsistency. [0003] At present, the traditional active equalization strategy of battery packs mostly uses voltage as the equalization control parameter, and judges whether equalization is needed to ensure the consistency of the battery pack through the voltage difference between each single battery. However, because the voltage is affected by internal and external factors, it cannot accurately reflect the inte...

AI Technical Summary

Problems solved by technology

However, because the voltage is affected by internal and external factors, it cannot accurately reflect the internal state of charge of the battery, and there are certain limitations in the consistency, speed and real-time performance of the battery pack.

Images