大容量储能系统电池管理系统均衡技术研究

电池组一致性问题是大容量电池储能系统的重要问题，电池管理系统的均衡技术是解决这一问题的有效方法。对大容量储能系统中电池管理系统均衡技术进行了研究，分别介绍和探讨了电池模块内均衡技术、模块间均衡技术，以及电池系统中相内和相间均衡策略，并阐述了四级均衡体系的构建与实现。通过电池系统四级均衡体系的应用，实现了电池系统内不同层级的有效动态均衡，为更大容量的电池系统的长寿命和有效利用提供了技术支持。

Research on Balancing Technology of Battery Management System of High-capacity Energy Storage System

The consistency of battery pack is a critical problem of high-capacity battery energy storage system. The balancing technology of battery management system is an effective solution to this problem. This paper made research on battery management system balancing technology of high-capacity energy storage system. Balancing technologies within the battery module, between the modules, within the phase and between the phases of battery system were introduced and discussed. The construction and realisation of 4-level balancing system were described. Through the application of 4-level balancing system of battery system, the effective dynamic balance of different levels of battery system was achieved, which has provided technical support for the long-life and effective utilisation of higher capacity battery system.